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 made a login form with HTml, but I don't know how to sign up and put it in db.How can I make it easier?
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I'm practicing how to use php, html, and mysql to sign up for a web page Php Grammar HTml Grammar Mysql Grammar is not that difficult, but like the example below,Combination? It's so hard to mix itSom...
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window.onload=function() { var img = document.querySelector('img') var size=100; img.width=size; img.height=size; img.style.width=size + 'px'; img.style.height=size + 'px';}Hello, I have a question fr...
I think the key sentence in LeeGoing's lecture was below*Coding has developed in the direction of reducing repetition and reducing mistakes and server resources(It's not exactly the same sentence, bu...
We are implementing shopping mall design even though we are not good enough with the winter vacation project.But when I pressed the Put your cart in button, I used JavaScript to open the windowThe abo...
I need help like ciderDevelop node.js, express as ejs template.In express, render date data as ejs the variable 2016-08-14 12:03:44 of dateTime.You want to convert the dateTime value received from ejs...
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