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
Creating a web application running IE11.Using WebRTC, I was able to save the video tag locally as an image of the video tag at that time by displaying the video of the device's camera on the video tag...
We are creating a todolist using ATOM (a super introductory course [for beginners] where you can understand the basics of JavaScript in an hour - everyone follows engineer/Kyotoshi Yamaura).When I lis...
I would like to create a site where videos and scrollbars work together, such as AirPods Pro site https://www.apple.com/airpods-pro/.What should I do?Does anyone know how to produce it roughly?
We use html5 audio to create a program to play audio files on your browser.Due to the need to play multiple files in a row, files were combined and loaded in a browser, but safari did not play properl...
After pressing the button, obtain the first child element of the element and the contents of the element (e.g.a)I would like to see in a dialog, but it says undefined.How do I fix this?<!DOCTYPE ht...
testLoad For some reason, if the function of JS is not defined, the behavior will be strange.What should I do?stacker?id=9:205 Uncaught ReferenceError: formationFunction is not definedat HTMLInputElem...
read the file in event.target.files<canvas>.Could someone tell me how to do it?
I'm making an LP.I'm thinking of installing a slide show using a swiper.I looked it up online and tried it, but it didn't work.<!DOCTYPE html><html lang=ja><head> <metacharset=UTF...
I want to specify the tracks of mp4 files containing multiple audio tracks and play them.In the end, I would like to play track 1 with L and track 2 with R.The browser is Chrome.I thought I could do i...
I wrote it because I wanted to use react-dnd, but I can't drag it again after I drag it once.Could you please take a look at the details?Thank you for your cooperation.The moving objects are placed on...
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