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
in javascript I'm using Internet Explorer 7.Trying to get the first element of a string in JavaScriptvar x = 'somestring';alert(x[0]); // returns undefinedWhat's wrong with this code?
How do I know if the email address is valid in JavaScript?
I'm making a game using HTML5 and JavaScript. How do I play music with JavaScript?
I use jQuery. How can I get the current URL path?For examplehttp://localhost/menuname.de?foo=bar&number=0I mean, this url.
When studying JavaScript,During library There are JS Library and jQuery.I am studying JavaScript at KahnacademyWhich should I study first, JS Library or jQuery?Also, is JS Library the original library...
How do I get the selected value from the list box? var as = document.form1.ddlViewBy.value;var e = document.getElementById(ddlViewBy);var strUser = e.options[e.selectedIndex].value;var value = documen...
In Perl, if you want to repeat a text N times, you can do $a = a x 10; aaaaaaaa' It's like this, but is there anything like this in JavaScript?
Is there a way to change only the first letter to capital letters? For example, if there is John Smith, I want to change it to John Smith, but I don't know what to do.
How do I modify the check status of the check box in JavaScript?
We are doing a simple form validation. It's nothing big, but once the value is entered, the submit button is activatedSubmit is disabled by default, and validation is turned on whenever the form value...
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