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
if (!selectedMarker || selectedMarker !== marker) { // If the clicked marker object is not null // Change the image of the clicked marker to the default image !!selectedMarker && selectedMarke...
Hello, the code below is Both the people and tshirts arrays are arranged in ascending order const fp = people.filter(person => { For(let item of tshirts){ // Change the array value if you are look...
Hello. The code below is when you enter your cell phone numberXXX-XXXX-XXXX, a code that verifies that the number and the number can be connected through -, /, and\.var re = /(?:\d{3}|\(\d{3}\))([-\/\...
I have a question for Mr. Yamoo!There is an example of hoisting that you used in the lecture [4-24] Variable, Function Hoisting/Scope Chaining at around 7:13 p.m. When I run it, I get undefined. I thi...
You are trying to use Syntax Highlighter. The code is written to look like node.js or input window.Once I tested it temporarily, I left it for the first time because it wanted to work out, and now I c...
$(.list a:nth-child(1)).mouseover(function(){ $(.cursor li).hide(); $(.cursor li:nth-child(1)).show(); });How can I write that nth-child(1) part to keep repeating as the number increases by 1?
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