JavaScript
外觀
namasanpazangal a matjaita a kavecikan nua i tingnaw avan aicu a JavaScript (djavaskript a tja siaya; sinipapukeljang tua lingav nua tja supuin aza takalan avan a /ˈdʒɑːvəskrɪpt/). a tja kineljangan uta a JS taza kavecikan. a tja mapacunan tua pakaljingasan a World Wide Web, HTML katua CSS, izua liaw a sinivecikan a JavaScript.[1] na sinansapitj aicu a kavecikan a JavaScript tua tjaliaw tua 97% a sapitj a pakatua ljingas.[2]
katjaisangas amin izua sivecivecik a JavaScript nua rusanremasudj tua sisupuan tua sapitj nua i ljingas sakamaya, izua uta zuma a sirasurasudj i tua tingnaw a pasuvililj.
setadjalan aicu a ngadan katua sipatjekaiyan nua JavaScript katua Java sakamaya, maretimalji aza matjadrusa a sikakaiyan nu venecik.
siciluqan tua kai
[remasudj ta vincikan | tinagiljang a remasudj ta vincikan]tjaljadjaluan a vecik
[remasudj ta vincikan | tinagiljang a remasudj ta vincikan]// Declares a function-scoped variable named `x`, and implicitly assigns the
// special value `undefined` to it. Variables without value are automatically
// set to undefined.
var x;
// Variables can be manually set to `undefined` like so
var x2 = undefined;
// Declares a block-scoped variable named `y`, and implicitly sets it to
// `undefined`. The `let` keyword was introduced in ECMAScript 2015.
let y;
// Declares a block-scoped, un-reassignable variable named `z`, and sets it to
// a string literal. The `const` keyword was also introduced in ECMAScript 2015,
// and must be explicitly assigned to.
// The keyword `const` means constant, hence the variable cannot be reassigned
// as the value is `constant`.
const z = "this value cannot be reassigned!";
// Declares a global-scoped variable and assigns 3. This is generally considered
// bad practice, and will not work if strict mode is on.
t = 3;
// Declares a variable named `myNumber`, and assigns a number literal (the value
// `2`) to it.
let myNumber = 2;
// Reassigns `myNumber`, setting it to a string literal (the value `"foo"`).
// JavaScript is a dynamically-typed language, so this is legal.
myNumber = "foo";
- ↑ Flanagan, David (18 April 2011). JavaScript: the definitive guide. Beijing; Farnham: O'Reilly. p. 1. ISBN 978-1-4493-9385-4. OCLC 686709345. "JavaScript is part of the triad of technologies that all Web developers must learn: HTML to specify the content of web pages, CSS to specify the presentation of web pages, and JavaScript to specify the behavior of web pages."
- ↑ "Usage statistics of JavaScript as client-side programming language on websites". w3techs.com. 2021-04-09. Archived from the original on 2022-02-13. Retrieved 2021-04-09.