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
I am creating an Android app in the development environment of monaca.I'm trying to get information from an external server using the following logic.Refused to get unsafe header Content-Length The er...
When you retrieve a specific class in document.getElementsByClassName and loop it in forEach, only one element that should have two counts.If you check the console, you will receive the following valu...
vara=1;varb = 2;if(a< b) {//a<b>Run the contents a = b;}It was written like this, but if(a< b) If it's {//a<b, where should I write the contents of Run ?
I am a beginner at javascript.I'd like to print the table that I just wrote on the head.I couldn't.Where did you get it wrong?Could you tell me?Thank you for your cooperation.<html><head> ...
Nice to meet you.I've been looking into many things, but it's boiling down, so I'd like to ask you a question.We are developing using Spring in Java 8.The JS framework is AngularJS (1 series).What I w...
What kind of function is call?When I searched, I couldn't understand it because it was full of technical terms.Please give me a rough idea of the program so that people who don't know it well can unde...
A PHP project in Eclipse has a JS that is loaded into a web page.I wish I could perform steps for JS by debugging Eclipse, but is it impossible?Are there not enough plug-ins?Debugging does not stop at...
render(){ let tags = this.props.tags; if(!Array.isArray(this.props.tags)){ tags = [tags]; } let tagsDisplayName=name; if(tags.length>0){ const category = tags[0].category; if(category===product|...
I want to import my own JavaScript module (ES Module) in another file, but it doesn't work.Failed to load the module source file:///C:/Users/username/Programming/jsworks/ascii85/ascii85.mjs.The error ...
Below is a web page created by ASP.NET (VB.NET), but when the image button is pressed, I would like to open html on a completely different site depending on the value of the session variable.(If the s...
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