I have a javascript file which creates a XMLHttpRequest object and opens a connection to a PHP file and sends a form object to it. The Javascript file is like this: let formData = new FormData(); ...

There are quite a few ways in which you can implement Stacks and Queues in Javascript. Most of the answers above are quite shallow implementations and I would try to implement something more readable (using new syntax features of es6) and robust.

Apr 14, 2016 · JavaScript is primarily used in the form of client-side JavaScript, implemented as part of a web browser in order to provide enhanced user interfaces and dynamic websites. However, its use in applications outside web pages is also significant.

Apr 9, 2025 · There are lots of simple things you can do to improve at JavaScript. Here are some methods we use to write better JS.

Sep 12, 2019 · There are lots of simple things you can do to improve at JavaScript. Here are some methods we use to write better JS. In our 2019 Dev Survey, we asked what kind of content Stack Overflow users would like to see beyond questions and answers. The most popular response was “tech articles written by other developers.”

When I click Run code snippet, the JavaScript code can't execute; no alert webpage popup. How can I make it run? Your syntax is off. Your markup is: var content=document.body.innerHTML; alert(content) . But the Markdown must contain <!-- language: lang-js --> before the JavaScript segment, eg: var content=document.body.innerHTML; alert(content) .

Mar 20, 2021 · Understand what is a memory leak in DOM element or closure in javascript, how to analyze and fix it.

JavaScript classes are introduced in ECMAScript 6 and are syntactical sugar over JavaScript's existing prototype-based inheritance. The class syntax is not introducing a new object-oriented inheritance model to JavaScript. JavaScript classes provide a much simpler and clearer syntax to create objects and deal with inheritance.

Nov 10, 2021 · At best, it’s a library that developers use to build their own, highly-specialized JavaScript frameworks. All of these issues are manifest in the most popular frameworks being used today. But there are also a number of specific issues that affect individual frameworks. So let’s take a quick look at each in turn.

Aug 23, 2016 · I have a lot experience in JavaScript, although now I can hardly keep up with its fast progress, but I do not find many questions that are interesting or worthwhile to answer. The most common questions that I find, but do not like, are of these types: