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
When previewing an image, a new preview image appears next to the existing image.What should I do to display it so that it can be replaced with an existing image?Thank you for your cooperation.<div...
The openlayer3 Export PDF output wait state does not end. With the intention of creating PDF output of the map using http://openlayers.org/en/latest/examples/export-pdf.html, I copied and almost made ...
I use fullcalendar.Characters get garbled when you turn the month on the weekly display.This code is full calendar settings.<script>$(document).ready(function(){ $('#calendar').fullCalendar({ co...
About JavaScript synchronization and asynchronous processing.I'd like to put a two-second sleep process in the following source, but it doesn't work.if(hoge){ if(!huga){ // Here's a 2-second sleep...
now=new Date();n = 0;xday = new Date (2016, 10-1, 13, 4, 31, 0);var datef = new Array (24*60*60*1000, 60*60*1000, 60*1000;function countDown(){ var time = new Array(4); vardeff=Math.abs(now.getTime()+...
Google Apps Script Execution API allows JavaScript to call GAS functions.Authentication is complete, but when I try to do it, I get an error message ScScript function not found: test とThere is a funct...
Unable to retrieve polygon deformation events with multiple paths.// Creating polygonsvar path1 = [ // Outer polygon] new google.maps.LatLng (36.66841891894785, 138.636474609375), new google.map...
I'm studying HTML5+SpringBootI passed the data from HTML to javascript as follows:th:onclick= | show ('${test.data1}', '${test.data2}'); |If the data is small, the value will be passed without any pro...
I'm trying to create an app using ionic, but under proxy environmentionic start myappAn error occurs when you execute the command in .Based on the contents of the error, I think there is an error in ...
I would like to use the function here to handle the hidden attribute in HTML5, but the method extension of jQuery did not work.https://jsfiddle.net/jhfrench/g8Sqy/$('button').click(function(){ $('#myE...
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