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 am currently developing a mobile app with monaca (HTML+CSS+Javascript).■ The final configuration is expected to be as follows: Mobile Application <-->nifty mbaas<-->Self serverI would li...
I have a question about JavaScript garbage collection (GC).I don't understand why only the former variable obj is GCed in the following two examples.Both of them have not been referenced to be monitor...
I'd like to import comma separated numbers that I entered on the form of html as a javascript array.For example, send 1, 2, 3, 4, 5, 6, 7, 8, 9 on the form.where var x = [1, 2, 3, 4, 5, 6, 7, 8, 9]; a...
Prerequisites/What you want to achieveI am currently making my own contributions to GitHub.↓Contributions part of GitHub↓ Self-made Problems you are havingI'd like to change the variable defined in Ra...
Chrome and Safari allow you to drag and drop files into the form.(See picture below) However, IE won't do this (drop will open the image in your browser).Can I use JavaScript to drag and drop files in...
Creating a web application.It hasn't been long since I started from zero, so I would appreciate it if you could kindly tell me.(I'd like to ask for a hint at least.)We created a program that dynamical...
We are developing a smartphone application with monaca.We create a flowchart in the application, text out answers such as Yes and No to launch the mail software and display it in the body of the mail....
I asked teratail the same question, but I couldn't get an answer, so I would like to ask you a question.I would appreciate it if you could let me know if anyone knows.Safari only occurs.If the followi...
Is there a way to extract images from mp4 files using php or js?Also, would it be possible to bring out thumbnails with the ingenuity of html?I would appreciate it if you could let me know the details...
I tried a tutorial on Google Analytics' official website (https://developers.google.com/analytics/devguides/config/mgmt/v3/quickstart/web-js?hl=ja), but it doesn't work.[Tries]①Follow the guide on the...
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