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
Hello, thank you for your continuous support.I am writing a program that uses regular expressions in javascript, but the program doesn't work.When I tried it, the following code encountered the same s...
iconName.indexOf('icon07.png') image data does not appear in <option value=40610 selected=>, so I would like a condition that does not occur.Even if I write the code like this, it doesn't work.H...
I used the replace function for the script.Does the type not match?It doesn't work well.Even if you look at various sites, I don't know how to handle it carefully.Please point out the point of misuse....
phina.js Tips Collection #WinningDetermination - Qiita Using the above site as a reference, I am thinking of using the phina.js library to avoid the square coming from all directions using the code be...
·Is the jQuery selector result a jQuery object?·Or array?·Or an array-like but not strictly array-like object like DOM?
I would like to generate an event when changing the value of the input text element.If you change the value in javascript, change will not generate an event.How can it happen?I looked it up and found ...
I'm studying FILEAPI at Monaca, but I can't create files even if I look at the documents on the website.https://docs.monaca.io/ja/reference/cordova_6.2/file/I tried to create a txt file using this doc...
Site URLhttp://uu-hokkaido.cedars.jp/renewal.shtmlIf you mouse-on the area of the area on the main visual map of Hokkaido, the pink circle becomes darker in :hover, but For example, when you mouse on ...
While I'm making rpg games with Javascript, I'm trying to add abnormal conditions and enhancements.Therefore, we have added a condition array to each character constructor that represents each charact...
I have created the following code to do something like the title.However, the function does not ignite and there are no errors.How can I send data from background.js to popup.js?background.jschrome.ru...
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