Javascript Counter Increment

If the counter variable is declared using the var keyword, the counter variable is not local to the loop. JavaScript Made Easy is the place to find it. A really simple jQuery counter (count up to) script for incrementing up to a certain number at a given speed and performing a callback when the countup is finished. When the counter function is invoked, it returns a reference to the increment function. ASPARAGUS TONGS. JavaScript For Loop Explained. We have two such counters, and so we define Incrementer to avoid code duplication (although it would be nice to program always like this, even in the absence of the worry of duplication). JavaScript For loop is one of the most commonly used loop in any programming language. Stacks and Queues. JavaScript performs several types of repetitive operations, called "looping". C-like languages feature two versions (pre- and post-) of each operator with slightly different semantics. The reason is that if you increment your array index as you showed in your code above, the starting position of the array will be lost as the index that pointed to it got incremented. setTimeout(). In the above example, outer function Counter returns the reference of inner function IncreaseCounter(). I am pulling news feeds from moreover. We cannot use post-increment with this method of operator overloading. The tech stack for this site is fairly boring. MongoDB - Auto-Increment Sequence - MongoDB does not have out-of-the-box auto-increment functionality, like SQL databases. how to setup an Auto Increment Number to a custom field in MS CRM 4. With its help you can count clicks on any link on your website. com/mdn/interactive-examples and send us a pull request. I want the counter to increment when I collide with the object that contains the class. The "+" operator is overloaded, it can mean (amongst other things) arithmetic addition or string concatenation. The "While" Loop. png,after refreshing the page without any increment same image show…. Can someone give me some guidance about how I would do this? Thanks Paul. They only create new counters if there is no counter of the given name on the element yet. To assist you in performing some of the most routine operations, the JavaScript language provides many ready-made objects that you can directly use in your code. The counter name slideNum will be used throughout the example. Best Way to Loop Through an Array in JavaScript Dec 6 th , 2010 Last week, a colleague of mine asked me “Why are you using a ‘standard for loop’ rather than the faster ‘for-in loop’ to loop through an Array in JavaScript?” and for this reason I’m going to write a short explanation about that. Counter-Increment The counter-increment property identifies which scope the counter is actually associated with. < Number(90071992547409929999) > 90071992547409940000 It can't store every integer greater than 2 53, but it can most definitely store some integers greater than 2 53, i. If you have any plugins or themes activated which add inline JavaScript to the admin interface you’ll see that those have been blocked (in the console tab of developer tools). That is you fetch the existing value of the counter and add one then store the answer back into the variable counter. Increment a Number with Javascript, freeCodeCamp Basic Javascript We Will Code. Global variables can be used (and changed) by all scripts in the page (and in the window). counter <= counter + 1'b1; // It is okay with all, lint and synthesis cleaned line, you can use 1'd1 instead of 1'b1 counter <= counter + 1; // take 1 as 32-bit integer decimal so flag synthesis warning that it produce 32-bit result counter <= counter + 24'b1; // It can be used And yes, It only adds one in counter's previous value. # run contents of "my_file" as a program perl my_file # run debugger "stand-alone". I'm just learning JavaScript and jQuery, and I've got some code that works, but I know it can be optimized. The increment and decrement operators in JavaScript will add one (+1) or subtract one (-1), respectively, to their operand, and then return a value. Initial value none Applies to All elements Inherited No Media All Computed value Specified value Animatable No CSS Version CSS2, CSS3 JavaScript syntax object. The memory requirement keeps increasing as the user base increases (unsustainable). For instance, the previous example can be modified to use the copyOfRange method of the java. I either need to increment the play count, or just fast forward to the last 1-2 seconds of the song. The id defines which counter that should be incremented. If you need each component to have a separate counter, you could modify the counter implementation. To increment the counter, use the counter-increment property and the counter name created in the first step: ol. Always updating and 100% Free. Sign in to make your opinion count. This is most often used in loops as a counter, but it can occur elsewhere in the script as well. We cannot use post-increment with this method of operator overloading. I also use his JSLint tool on an hourly basis before checking in any code to our repository, as is good sense. TypeScript 2. Hello, I want counter in my webpage. We will see how to create auto-increment number column in SharePoint list. They are commonly implemented in imperative programming languages. All your files will be change in a second with increment. This number keeps incrementing as the load test progresses. [code] int max_num = 100; //max_num is the number you want to count to int count = 0; while (count < max_num) count+=2; printf("%d", count);[/code]. Let us see the syntax of the for loop in JavaScript Programming language: If you. The 'counter-increment' property acts like an incremented variable in a programming language - it specifies the amount to increment the specified counter by when the current CSS selector is encountered. JavaScript - Auto Increment Id For A Javascript Generated Checkbox List (input) - Free JavaScript Tutorials, Help, Tips, Tricks, and More. valueAsNumber - Retrieve the value of the input as a JavaScript number variable (by default retrieving the value of an returns a string). ” Because while and dowhile statements are conditionally. What are Increment/Decrement Operators? Explanation. JavaScript For Loop Explained. This does that for Node. If used postfix, with operator after operand (for example, x++), then it returns the value before incrementing. Feel free to override the duration, easing, step, complete parameters as. Plus keeping each method straight can drive a developer nuts. Increment a number by one by manipulating the bits; Increment a number by one by manipulating the bits; Find maximum xor of k elements in an array; Find the number of pair of Ideal nodes in a given tree; Find XOR of numbers from the range [L, R] Count total set bits in all numbers from 1 to n | Set 2; Equal Sum and XOR of three Numbers. I have my character object and when it lands on an object I want the counter to go up by 1 each time, but also not destory that object it needs to remain there. The script DOES actually increment the visitor count, though it does so based on a fixed algorithm involving the current date, not the actual number of visitors. I want to increment the last part of the number (00001) on document load. Initial Count: The initial count can be set in the configuration. The former decreases by a factor of one, the latter by a factor of two. JavaScript performs several types of repetitive operations, called "looping". However, if the let keyword is used, the counter variable is local to the loop. Define increment. npm install node-red-contrib-counter Usage. Learn: How to overload pre-increment operator by using the concept of nameless temporary objects in C++, this articles contains solved example on this concept? Prerequisite: operator overloading and its rules. JavaScript has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions. Firma el libro de visitas! Lee el libro de visitas!. The shared lexical environment is created in the body of an anonymous function, which is executed as soon as it has been defined. Brooks, PhD Institute for Earth Science Research and Education 2686 Overhill Drive Norristown 19403 [email protected]. Maybe useful for mobile apps, though, and for cases where typing in the number isn't the point as much as "more" and "less" on a scale, but then why not just click along the range ( ie with star ratings ). IncreaseCounter increases the outer variable counter to one. I came to realize that the solution to this is using an atomic counter. These Acrobat-specific objects enable a developer to manipulate a PDF file, allowing the PDF file to communicate with a database, modify its appearance, and so on. So if you start it at 4, at the moment before it displays it, the value increases to 5. If used postfix, with operator after operand (for example, x++), then it increments and returns the value before incrementing. This example helps you to understand the Increment and Decrement Operators in Java practically. I'm trying to create a function that leverages the auto increment function which is provided as a field calculator example in ArcGIS Pro's Calculate Field Python examples. The script DOES actually increment the visitor count, though it does so based on a fixed algorithm involving the current date, not the actual number of visitors. Convert between 0-255 RGB values and HTML hex code dialup color calculator. This article describes how to build a simple hit counter in ASP. html whenever correct radio is pressed counter. Let’s clarify. This does that for Node. What's an auto-incrementing value, anyway? Nothing happens by magic. Asked recently on Formspring: how to increment count in database on clicking radio button. Calling the Increment value and assigning that value to the local variable 'a'. You may define an onClick() function to increment a count on each click event. start 956 Want to increment counter ONLY if date is in column H4:H53 and have something like date, no date, date, no date, no date, date in column F and column G count like 957, no count, 958, no count, no count, 959 in column G. Javascript frame on click increment counter on another frame Javascript counter increment value to carry on to next page How to increment a counter each time a variable is added to the map ?. Hi Have looked at many options, but none work. Minnacık bir kadın sevdi. Increment Operator is Used to Increment Value Stored inside Variable on which it is operating. But this loop is seen to be very useful while working with objects. Hi - I have an issue with a PHP Counter script. Excellent reference material for JavaScript. Whenever something that’s bound to in the view-model changes, the render function will be called again. Incrementer provides a method increment to augment a counter in a span. The counter-increment CSS property increases or decreases the value of a CSS counter by a given value. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 8 respuestas en este tema made_in. the minimum separation between representable values becomes greater than 1 past that point. We take a variable count and set it to zero. Java Increment and Decrement Operators. I'm new to Javascript and I was the person whom in your youtube video asked how to reset it when it reached a. increment to change the current value of numeric properties. 😍 Increment decrement counters using various frontend frameworks. Increment and Decrease number onClick React" is published by Agata Krzywda. One or more counter names can be specified. So let's get started. Increment and Decrement Operators are Unary Operators. For example, (3 + 2) * 2 forces 3 + 2 to be evaluated first. What's an auto-incrementing value, anyway? Nothing happens by magic. It writes the Substring specified by the index and count arguments. This example helps you to understand the Increment and Decrement Operators in Java practically. Firma el libro de visitas! Lee el libro de visitas!. Update # Issue is observed for Internal User as well. When ever the function runs, the value of this varible must be incremented and it should not be equal to 0 again. The script DOES actually increment the visitor count, though it does so based on a fixed algorithm involving the current date, not the actual number of visitors. The shared lexical environment is created in the body of an anonymous function, which is executed as soon as it has been defined. Also in counter-reset property you cannot use commas, just spaces to separate values. An array or array-like object in javascript is always an object on which methods like. Asked recently on Formspring: how to increment count in database on clicking radio button. I also use his JSLint tool on an hourly basis before checking in any code to our repository, as is good sense. Thank you Karthik. in loop provides a simpler way to iterate through the properties of an object. [code] int max_num = 100; //max_num is the number you want to count to int count = 0; while (count < max_num) count+=2; printf("%d", count);[/code]. When i execute this project the messages will be published in JBoss topic and i can get the messages though subscriber. The value of a counter can be displayed using either the counter() or counters() function in a content property. Note: Make sure you don’t modify the classNames of the buttons. Now MySQL auto-increment column value is reseted and starts with 200, next is 201 etc. Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 Race condition in backend/ctrl. SINISTRA DEMOCRATICA Gussago online ha lo scopo di promuovere la partecipazione all'attività politica e culturale dei cittadini. 1 Equation (1. An element inside another element in JavaScript? Tag names of body element's children in JavaScript? Replace a child node with a new node in JavaScript? Number of elements a particular tag contains in JavaScript? Built-in javascript constructors? Add a method to a JavaScript object constructor? Add a property to a JavaScript object constructor?. These let you run a piece of JavaScript code at some point in the future. * Platform/WorkItem. Each member of the group is called an element. The counter-increment CSS property increases or decreases the value of a CSS counter by a given value. The result is a counter that is always increasing, unlike most other JavaScript counters that simply generate a random number to display. Now, create a. With Cyclow, instead of thinking in a big global model and pure functions, you have to think in interconnected components with async inputs/outputs and their own state. CSS Properties exercises, practice and solution: This is an example to set a number sections and sub-sections with Section. // To enable legacy code generation, change the value of the 'Code Generation Strategy' designer // property to 'Legacy ObjectContext'. Verify the rowCount function is working. The id defines which counter that should be incremented. IncreaseCounter increases the outer variable counter to one. Initialize count = 1 and i = 1 (PROCESS) Check if i is less than or equal to 10 (DECISION) if YES then perform step 3 else STOP; Set sum = 0 and j = 1 (PROCESS) Check if j is less than or equal to 10 (DECISION) if YES then perform step 5 else perform step 9; Add count to sum sum = sum + count (PROCESS) Increment count by 1 count = count + 1. Increment the count whenever a leap year is found. 1 for Swift was released in September 2019 to add support for Xcode 11 and Swift 5. In Amazon DynamoDB, an item is a collection of attributes. To assist you in performing some of the most routine operations, the JavaScript language provides many ready-made objects that you can directly use in your code. We cannot use post-increment with this method of operator overloading. The idea was to create something like the counter on this page using javascript, HTML and a little CSS; using a different layout. io Redux starter kit, a fantastic resource that’s been helpful for me as I’ve been diving into Redux development. Task 3: Conditionally increment the counter. The code below sets everything to zero and briefly changes the appropriate index to 1 while the mouse is clicked but changes back to 0 once the mouse is released. Skip navigation CSS Counter-Increment & Counter-Reset Tutorial in Hindi/Urdu JavaScript the Basics - Increment and Decrement Operator. Notice again that count++ increments by one; however, count+=2 would increment count by a factor of two. I’m a super noob at XSL. JavaScript For Loop Explained. Results show that the distribution of total flash rates is highly skewed toward small values, whereas the greatest rate is 185 flashes min-1. Is this right ? Should the thread count continue to increment ?If pooling i would expect to see these numbers being re-used. JavaScript Increment/Decrement Form Field Value. I tried my best to explain this to you, I hope you understood. When screen real estate is limited, use a scroll pane to display a component that is large or one whose size can change dynamically. 0 through 4. Thanks for your help. Initial value none Applies to All elements Inherited No Media All Computed value Specified value Animatable No CSS Version CSS2, CSS3 JavaScript syntax object. Coming from a c background as I do, this is something I really miss. (Hints: use a int variable called count, which is initialized to zero. A "While" Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. Large Collection of JavaScript source code. decrement loop JavaScript performance comparison. Quiz on Increment and Decrement This is a practice quiz. increment synonyms, increment pronunciation, increment translation, English dictionary definition of increment. To increment the counter, use the counter-increment property and the counter name created in the first step: ol. This does that for Node. In the InnoDB storage engine the auto increment counter is only stored in memory, not on disk. In just 10% as much space, you managed to provide enough examples (one is plenty - nine is overkill to the point when you're just showing off), and you provided us with enough info to know that (()) is the key to using arithmetic in bash. how is it possible with javascript to increment counter if correct radio button is clicked What I have tried: used javascript to display the value of selected radio button would want the counter to increment if correct button is clicked. Tell us what’s happening: after running the test , it tell that setState is undefined for increment and reset function. By: IncludeHelp, on 21 JAN 2017 We already know that there are two kinds of unary operators which are used to increase a value by 1. Using Counter Collection to generate a sequence- we have studied the 7 steps to generate MongoDB auto increment sequence with JavaScript function and example. Instead of tracking individual storms, we superimpose a 0. Este tema ha sido archivado. In Amazon DynamoDB, an item is a collection of attributes. Increment Auto Number Codes and Scripts Downloads Free. Use it to add a fun, inflatable, and most. I'd recommend you check it out. html and radio. COUNT'n is an advanced online tally counter featuring multiple tallies, timestamp logging, saving of tally sessions, data reports, countdown timer and day/night mode. There are 2 Increment or decrement operators -> ++ and --. Let's go over how to use TypeScript with React functional or class-based components. Default increment is 1. Two things that computers are very good at are calculations and repetition. So the first value (which is required) is the matching custom-named counter from the counter-reset property in the scope identifier from the first declaration block. Have column (G4:G53) in excel that has receipt numbers in it, e. NET Forums / General ASP. How to Develop a Simple Step Counter App on ReactNative an open-source JavaScript library from Facebook. 0) Agenda Portal updates and improvements Business Centers module added to Sugar Sell Javascript Library and Bootstrap component updates Customizing the Portal Addressing common questions about new SugarCRM product lines More best practices for developing for the Cloud. If used postfix, with operator after operand (for example, x++), then it increments and returns the value before incrementing. Java applet disabled. the minimum separation between representable values becomes greater than 1 past that point. every doc would be saved for the first time with a counter, incrementing on every insert of the same key. Specifies the list of counters and increment values. I guess it looks nice, right?. See Intro to react. With its help you can count clicks on any link on your website. A real life. With Cyclow, instead of thinking in a big global model and pure functions, you have to think in interconnected components with async inputs/outputs and their own state. Installation. PARA ENTRAR EN LA PAGINA DA CLICK EN LA IMAGEN DEL ESCUDO. Feel free to override the duration, easing, step, complete parameters as. However, you can easily get the proper count using either of the two methods written below. Welcome to this weeks JavaScript Quickie — 3 Minute JavaScript Lessons. Heya, I would like to know how to create an increment once you press a button. Includes brief RGB and HEX tutorials. Current stars: 0. This version of TypeScript has some new additions that are great for Redux development in React: type narrowing for tagged unions. You may specify as many counters to increment as you want, with each name or name-number pair separated by a space. The value of this property is a space-delimited list of identifier-value pairs, where identifier is the name of a counter, and value defines how much the counter will be incremented by. Any suggestions? I have tried a couple of things with formulas but cant't seem to get it right, because I can't call the last row of items count or value. The writeln statement will execute a total of 10 times. Standalone Xim Ignition Control Module With Harness; Chrysler. If records are deleted, AUTO_INCREMENT may jump back on server restart. JavaScript Counter, animated, count down or count up, digital, alphabetic or alphanumeric, easy to integrate and very simple to manipulate it's appearance. We cannot use post-increment with this method of operator overloading. Counter name. The structure is similar to C language. Sometimes, while working with dictionaries, we can have a use-case in which we require to increment a particular key's value in dictionary. name − The name of a counter. When ever the function runs, the value of this varible must be incremented and it should not be equal to 0 again. Each member of the group is called an element. Also: You use any constant or other expression resulting in a numeric value in the increment statement. toggle text output run reset copy. Increment Auto Number Codes and Scripts Downloads Free. The name can be any string value. You can specify size, image, color, link. Increment (++) The increment operator increments (adds one to) its operand and returns a value. To count the number of customers with the string Mini in their names, examine each customer’s name and add one to the counter for every occurrence. The "Provider_Index" counter now increments when I click on the "AddAdditionalProvider" button. #39941: Allow using Content-Security-Policy without unsafe-inline. The id defines which counter to increment. Auto increment serial number in html table without jquery: Hi Friends, Today I will tell you about how to auto increment the serial number in the table without using any JavaScript or its library. If you need help with JavaScript. While the switch statement is useful, it doesn’t quite fit in with the rest of our functional code. Dual-sync Distributor (pontiac) - West Coast Offshore. A CSS counter is a variable that is used to track how many times a variable is used. The JavaScript Increment and Decrement Operators are used to increase or decrease the value by 1. Both of these statements do the same thing: increase counter by 1. I’d rather not see this too often, though, like kongondo says, typing in a number is my preference too. But I haven't found in documentation anything about order that rows in insert are processed, so I'm worried I won't be able to know what the ID's are. This example helps you to understand the Increment and Decrement Operators in Java practically. With its help you can count clicks on any link on your website. Post-increment and post-decrement creates a copy of the object, increments or decrements the value of the object and returns the copy from before the increment or decrement. Atomic Counter. If the id refers to a not-initialized counter by counter-reset, the default initial value is 0. Excellent reference material for JavaScript. Single page application. Reversed for loop: 3. In order to perform an increment or a decrement…. The id defines which counter to increment. Lua will attempt an implicit type conversion if an arithmetic operator is used with a string. When it expires you increment an internal variable that you use as index into the array. An array is a random access data structure, where each element can be accessed directly and in constant time. To combine multiple counter ID's in the same style attribute, string them together using space delimited counter ID values. For example in client side javascript you have 2 methods of the window object: setTimeout : schedules a function to run after a specified number of miliseconds setInterval : is the same but invokes the function repeatedly :var h = setInterval(callback,60000). The latter two increment the counter's value by 1, and they take one argument -- the name of the counter whose value should be incremented. Thousands of lyrics to hymns, praise and worship songs, and Christian gospel tracks. How to count the number of times a button is clicked? JavaScript } // function to increment value of count variable incrementCount() { count++; } How to count the number of times a button. Thank you Karthik. Increment a Number with Javascript, freeCodeCamp Basic Javascript We Will Code. Specifies or retrieves the list of counters and increment values. I thought to get MAX(id) before selection, then get last_insert_id after selection and using count of inserted rows assign id to each. Is this right ? Should the thread count continue to increment ?If pooling i would expect to see these numbers being re-used. I either need to increment the play count, or just fast forward to the last 1-2 seconds of the song. But what i observed is when i publish a message in to the JBoss topic the count does not show up or increment in the JMX console. But it's too pure for me. Whenever something that’s bound to in the view-model changes, the render function will be called again. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. In computer programming it is quite common to want to increase or decrease the value of an integer type by 1. Firma el libro de visitas! Lee el libro de visitas!. increment (or decrement) by which the control variable is modified each iteration through the loop condition that tests for the final value of the control variable A count-controlled repetition will exit after running a certain number of times. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. Solved: In my project, I increment a variable with 1 to count the clics. It has to be kind of like this: $i = 1; if ("#button"). Answer to in the following javascript code follow the directons below and in the picture /* JavaScript 6th Edition Chapter 10 Hand. Incrementing and Decrementing means adding or subtracting a value (usually 1), respectively, from the value of a numeric variable. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Let’s review some of the key points from the article: “Each firefly has its own individual internal clock…” A clock in this case is like a counter, so we will start by adding a clock variable to our program. Increment (++) The increment operator increments (adds one to) its operand and returns a value. body ); With the component rendered to the DOM, we can click on the text and see the count increment. If you need each component to have a separate counter, you could modify the counter implementation. c# increment and decrement counter - posted in C#: I want to make increment and decrement counter. This behavior causes the pointer, which previously referred to the n th element of the array, to refer to the (n +1)th element. For example in client side javascript you have 2 methods of the window object: setTimeout : schedules a function to run after a specified number of miliseconds setInterval : is the same but invokes the function repeatedly :var h = setInterval(callback,60000). JavaScript, 22 lines. One of the most common arithmetic operations when writing Bash scripts is incrementing and decrementing variables. The counter-increment property is specified as either one of the following: A naming the counter, followed optionally by an. onCreate method, which executes for every retrieval of a row of data from the data source. Incrementing the counter. JavaScript has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions. If this is TRUE then we again print "Hello World" and increment the variable count. You are using an IIFE in your for-loop to which you pass the index. counter increment HTML CSS TUTORIALS Source code Examples !important a. NET / HTML, CSS and JavaScript / Increment page load counter. The tech stack for this site is fairly boring. input { beats { add_field => { "counter" => 1 } port => "5044" } } the document_id would be based on some fields from message;. Their most prevalent syntax are ++ (increasing) and -- (decrement). Shorthand operations do not add any feature to the Java programming language (So it's not a big deal). Once you add this list webpart to the page and select this view, you should get a heading that says "Count = 10". I have a page that when a button is clicked it adds 1 to a label, and then increments a. Values The name of the counter to. For dates outside this range, SQLite attempts to map the year into an equivalent year within this range, do the calculation, then map the year back. The counter's name must not be "none", "inherit", or "initial"; otherwise the declaration is ignored. I suspect that Javascript could be used to change the value as an Update completes successfully in any scenario. I have a question related to the code below, that I do not understand. JavaScript tutorial 43 - Increment & Decrement Operators - Part 1 JavaScript Increment and Decrement Operators: ++ , -- Increment and Decrements Operators: (are unary operators) are used to. Thank you Karthik. Okay, I'm guessing the answer is simple, but I'm trying to add the line number to the first input row (not sure if this conforms to good code practice) and I would like the line number to. ",apeatling 13,Message Inbox count incorrect,,,,defect (bug),,closed,2008-05-06T19:41:20Z,2016-10-06T19:38:11Z,"Due to the way deleting of messages works, the inbox count for messages is currently show incorrect numbers. Initialize the variable to 0 and in the PL/SQL block increment the variable and then test it for 1, 2 or 3 and do something appropriate. Below, you will find many example patterns that you can use for and adapt to your own purposes. pop(), splice(),. Increment/Decrement Operators in Perl. The Postfix Form returns the original value of the variable, before the increment/decrement The Prefix Form returns the value after the increment/decrement. This code or expression is used in programs as simple as a page counter or as complicated as credit card processing. php, ManageNews. An array is a group of variables that share the same name. We take a variable count and set it to zero. Check the loop counter: 3. Also, create a reset() method so when the reset button is clicked, the count is set to 0. Increment and decrement operators are unary operators that add or subtract one, to or from their operand, respectively. This version of TypeScript has some new additions that are great for Redux development in React: type narrowing for tagged unions. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: