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 would like to display only the first element of the key in JSON array data in Javascript (AB and A are displayed in consecutive alerts), but the source below does not work.How should I correct it?Co...
I stumbled while creating a discord bot.I created it with node.js and run it with the forever command, but there is a bug(?) that sends a lot of replies.This increases every time you issue the forever...
You are using the tablesorter+metadata plug-in to create a sortable table.I want to sort by the value corresponding to the label on the button, but if I change the value when I press the button and th...
I would like to know how to use Backbone.js in JavaScript framework to ignite and monitor events between pages.Or is it possible?The image is like rewriting the div element of page1.html by pressing t...
On the station list page like the one below, when you click on the box class in jQuery's toggleClass, the box is colored by repeated addition and deletion of the onbox class.I understand that if you a...
We have modified the jquery Bonsai plug-in to create the original jquery plug-in.https://github.com/14021939/dropdownCheckComboboxdropdownCheckCombobox.js (line 96) cannot retrieve this.bonsai child n...
In order to test the load on the web application, I am making a test plan with JMeter.Because the UUID needs to be randomly POSTed in the POST data of the web application, the BSF PreProcessor is tryi...
fiscalYear is not defined at Object.<anonymous>The error appears.I thought the fiscalYear could not be read from this error.I tried console.log(123);` to see if JS is working, but it doesn't pri...
I'm a beginner in the program.In the TODO management app in the Monaca sample, once the photos and characters you add are closed, they are reset and disappear.I would like it to remain open again afte...
I am creating a web application on Google map api.I'm thinking of developing an app that allows me to search within a certain range in the place library and create my own directions by searching for r...
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