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 created a select box in index.html that I created in Google Apps Script.When I select a county name, I want to put that value in a variable in code .gs, but I don't know how to get it and how to use...
[Current situation] If you select GoogleAppsScript as Published -- > Place as Admin -- > Update Webstore Item Draft, you will also receive an error.It should be set up as shown in the attachment...
ASP.NET supports double transmission, but the validation and JS click events collide, so I can't reach the event handler...aspx<asp: ImageButton ID=imgUpdate runat=server CauseValidation=false OnCl...
After pressing the HTML button, I am trying to launch the mailer using JavaScript.I managed to boot it on Android after seeing the sample.However, I am worried that it doesn't work well on iOS.The mod...
I'm developing an Android app and using Ajax communication during startup.Hit the API on the server and retrieve the JSON output from the API.Trying to process information.At this time, the API placed...
I'm a beginner at MVC.The workspace is local.$.ajax({ type: POST, url: /aaa/bbb, data: {selectService:sendId}, success:function(msg){ alert(msg);... [HttpPost]public string bbb(string selectServi...
I would like to use the google map API to display the radius of the two points on the map and return store opening allowed when the circles do not overlap, and store opening not allowed when overlappi...
I am currently thinking of creating a SPA with Rails as the backend.I would like to control the /user screen below when I log in using the browserHistory of react-router.In other words, whether you ac...
The source code below is in the selected song selection (stop) of the pull-down button.The background color is set to gradation.However, it is currently in a state other than Select (Stop) and pull do...
The source code below is a digital alarm clock, but I have a question.In the javascript of the clock, check time says flg=-1, but flg=1 and flg=0 in function changeFlg(){}, so if this number (-1) is z...
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