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
See jsfiddle.—https://jsfiddle.net/ac189xhn/Create a two-page page that contains the main content and the sidebar.I want to be able to smoothly scroll to the section tag with the same main content as ...
I would like to get the MySQL table information as below and sort the process by pressing button.However, if there are two placeholders, such as updatesql, I don't know how to specify them on the node...
Do you want to improve this question?Edit your post to clarify the issue you are trying to resolve by adding details.Closed last year.Last yearI am writing code using JavaScript, but I get the followi...
I am currently practicing JavaScript.I use jQuery below.<script src=js/jquery-3.2.1.min.js></script>I would like to obtain the name of the input when the text is entered in the input text ...
Running Puppeteer in node.js.I accessed Google's top page with the following code and saved the screenshot as a jpg file.const supplier=require('puppeter');browser = wait supplier.launch({headless:fal...
I set the menu to open and close in the accordion menu, but I left only the items I entered open and How do I keep the other menus closed?http://www.dataplan.jp/blog/css/3127I'd like to use this site ...
·I would like to give the class name to the iframe tag of the advertisement installed on the site·How should I write it?·Do I need to wait for iframe to appear?·iframe.className=hoge?·AddClassName is ...
var Place=monaca.cloud.Collection(place);varCriteria=Place.find('name==Monaca, {propertyNames:[title, body, limit:5});Place.find(Criteria, _createdAt DESC, {propertyNames:[title, body, limit:5}).done(...
I am using TypeScript.I would like to determine the following unique constraint error. What should I do?Looking at the type definition of the MongoError object, it seems that there are only the messag...
I'm a beginner at javascriptI would like to inherit the Array class of javascript and create a new class of my own class.Previously, I inherited ArrayList in Java and created it, so I wrote the follow...
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