JavaScript (/ˈdʒɑːvəskrɪpt/), often abbreviated JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of websites use JavaScript on the client side for web page behavior, often incorporating third-party libraries. All major web browsers have a dedicated JavaScript engine to execute the code on users' devices.
JavaScript is a high-level, often just-in-time compiled language that conforms to the ECMAScript standard. It has dynamic typing, prototype-based object-orientation, and first-class functions. It is multi-paradigm, supporting event-driven, functional, and imperative programming styles. It has application programming interfaces (APIs) for working with text, dates, regular expressions, standard data structures, and the Document Object Model (DOM).
The ECMAScript standard does not include any input/output (I/O), such as networking, storage, or graphics facilities. In practice, the web browser or other runtime system provides JavaScript APIs for I/O.
JavaScript engines were originally used only in web browsers, but are now core components of some servers and a variety of applications. Two of the most popular runtime systems for this usage are Node.js and Deno.
Although Java and JavaScript are similar in name, syntax, and respective standard libraries, the two languages are distinct and differ greatly in design.
Reference: WIKIPEDIA
1427 questions
He has no programming knowledge.I know this is a poor question, but I would appreciate your help.What I'm trying to create now is Use the Google form as the contact form and forward the call to a spec...
Can I hook the Websocket constructor and onmessage on the WebWorker (Dedicated Worker)?If it is Main thread, you can hook it with JavaScript Proxy, but I would like to do this to Websocket on the WebW...
I use Discord.js to create a global chat.This person made it by referring to the website .So I thought that if you can't mute it, it might get rough, so I asked you a question.Do you know where to det...
<!DOCTYPE html><html lang=ja><style>US>svg{ border —solid1px; } </style><head> <metacharset=utf-8> <title>D3.js (Force Layout) Practice</title></head...
I am currently using JavaScript to create drawing software.So I want to create a zoom function, but it doesn't work.Below is the code function zoom(x,y){ varcanvas= document.getElementById('canvas'); ...
In the time leaf, pass the variables from the two lists, the stationNameList and the stationIdList, to JavaScript.in two lists of variables received<input type=textth:field=*{ationName}onclick=chec...
There is a switch that switches on and off, and the changeState function is called when switching.The contents of the key passed as an argument are passed in the form {numberState:true}.I want to chan...
Many DOM elements are included in the created Web site page and the page is slow to display.In addition, there are symptoms such as JavaScript re-layout collapsing.How do I keep the page from being di...
in peg.jsI wrote the following parserper.pegjsStart= c:(Content+)EOL { return c;}Content = openId:OpenTag:(Content) + closeId:CloseTag{ if(openId!==closeId){ through new Error(expect</+openId+>...
https://stackoverflow.com/questions/54596396/vue-js-nuxt-js-load-fallback-image-on-404Based on the above article, we created a program called Image2 if image1 is an error.However, it works well when s...
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