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This article mainly explains "what is the basic grammar of javascript". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "describe the basic grammar of javascript".

ECMAScript describes the basic syntax of javascript. ECMAScript is a standard scripting language specification and the core of JavaScript. It defines the syntax specification of javascript and describes the basic syntax and data types of the language.

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

ECMAScript describes the basic syntax of javascript.

ECMAScript (abbreviated as "ES") is a general scripting language implemented according to the ECMA-262 standard. The ECMA-262 standard mainly defines the syntax, type, statement, keyword, reserved word, operator, object and other parts of the language. At present, the latest version of ECMAScript is ECMAScript6 (referred to as "ES6").

As for JavaScript, people sometimes think that JavaScript and ECMAScript are the same, but it is not true that JavaScript contains much more content than specified in ECMA-262. A complete JavaScript consists of the following three parts:

ECMAScript: defines the syntax specification of javascript and describes the basic syntax and data types of the language

Document object Model (DOM): provides methods and interfaces for dealing with web content

Browser object Model (BOM): provides methods and interfaces for interacting with browsers.

ECMAScript is the core of JavaScript, describing the basic syntax of the language (var, for, if, array, etc.) and data types (numbers, strings, Boolean, functions, objects (obj, [], {}), null, undefined). ECMAScript is a set of standards that define what a language (such as JS) looks like.

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