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 the three sentences in the here part of Div without randomly moving the page, but I get an unexpected identified error in the array.Why?<div id=here></div> <scr...
There is a web service that has the following characteristics in the browser:Please let me know when you know what kind of technology you can use.This is a web service created by an acquaintance, but ...
My site is supposed to be viewed on various iPad models.Like the title, we need to determine which iPad we are browsing the website on.Is it iPad Air or Pro? How many generations are there?I would lik...
As I am a beginner in JavaScript, I am sorry if this is a basic question.I am currently creating a macro that automates the operation of an existing website.I am currently working on creating automati...
Inside jQuery, new Date() is giving out the error This is an unsupported operation for this object.I'd like to know how to avoid this.I don't know the reproduction conditions and I can't provide a min...
I made a website based on a tutorial.I have pushed the file to GitHub so that it can be viewed on the web.The site is https://gouehara.github.io/notes-app/.You can browse the index.html page, but if y...
I want to use the for statement to get the correct or incorrect values of the two-dimensional array, but it doesn't reflect well.I'm a beginner, so I'm doing it while searching online, but I don't kno...
I'm a beginner at js.This may be a rudimentary question, but please forgive me.Read the Google Calendar ID information stored in the CSV and From there, I thought about looping using for minutes to re...
In JavaScript, click constarray= { A—6, B—1, C—3}I would like to sort the array of objects such as in numerical order (higher order) by key.What should I do? constarray= { A—6, C—3, B : 1}
subWin=newArray(0,10);vari = 0;for(i;i<4;i++){ alert(In loop, OP window!=+i); subWin[i]=window.open(tmp.txt, 'sample+i', newwindow); alert(Get>=+subWin[i].name+==+XX+i);}; This second, alert, se...
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