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'm about to enter the front end.Using webpack and surrounding technology, - js and css are watched and automatically compiled when saving (when changing files)- Browser when autocompiled (localhost:8...
I would like to decode the image encoded in base64 in gas and save it in blob.However, the seventh line of Utilities.base64Decode(data); displays the error Failed to decode the string.I tried other ba...
Operating System: Windows 7 SP1Acrobat:Acrobat Reader XICurrently, we are trying to accomplish the process of deleting PDF pages with PDF embedded javascript.For this reason, we are referring to the D...
The rect.left+window.pageXOffset+px value is only Chrome for android different from other browsers.IE11, FireFox, Chrome for windows, FireFox for android get the expected value.You can't get the expec...
I can't do thisvarhistArray=newArray(256);varhistData = [histArray,histArray,histArray];for(i=0;i<3;i++){ for(j=0;j<256;j++){ histData[i][j] = 0; }}This one will be initialized properly, but wh...
On the page containing reCAPTCHA, some customers have checked I am not a robot, but the send button is not able to press.The majority of people are operating without any problems, but about 5% of peop...
I'm creating an auto-scrolling function on the screen, but it becomes very heavy because the value change check is performed in setInterval.Auto-scrolling does not change the value of the component, s...
To prevent typing errors and unauthorized registration when entering a new member registration email addressI want to implement the function to check if the domain entered by the user exists.*If possi...
I would like to obtain the color code (only one) that is used in the most range in the image in PHP or JavaScript.Are there any pages or libraries that might be helpful?*I don't want to get the color ...
Creating web applications for smartphones.The screen is divided into a content area, a middle area, and a touch area.I want to touch the touch area below to scroll and tap the top content area.For tou...
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