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5 mar 2024 · Learn JavaScript, the lightweight interpreted programming language with first-class functions, for web and other environments. Find guides, tutorials, reference, and documentation for core language features, APIs, frameworks, and more.
7 sie 2024 · Learn the basics of JavaScript, a cross-platform, object-oriented scripting language used to make webpages interactive. Compare JavaScript with Java and ECMAScript, and find out how to get started with JavaScript in your browser.
26 wrz 2024 · JavaScript arrays are zero-indexed: the first element of an array is at index 0, the second is at index 1, and so on — and the last element is at the value of the array's length property minus 1. JavaScript array-copy operations create shallow copies.
25 lip 2024 · Some of the most-used operations on strings are to check their length, to build and concatenate them using the + and += string operators, checking for the existence or location of substrings with the indexOf () method, or extracting substrings with the substring () method.
25 lip 2024 · The main entry point for core JavaScript documentation on MDN — this is where you'll find extensive reference docs on all aspects of the JavaScript language, and some advanced tutorials aimed at experienced JavaScripters.
JavaScript and JSON differences. JSON is a syntax for serializing objects, arrays, numbers, strings, booleans, and null. It is based upon JavaScript syntax, but is distinct from JavaScript: most of JavaScript is not JSON. For example: Objects and Arrays. Property names must be double-quoted strings; trailing commas are forbidden. Numbers.
25 maj 2017 · The JavaScript documentation on MDN includes the following: Learning the Web provides information for beginners and introduces basic concepts of programming and the Internet. JavaScript Guide (this guide) provides an overview about the JavaScript language and its objects.
