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The full name of js is JavaScript. It is a lightweight, literal, interpreted or just-in-time compiled high-level programming language with function priority. It is a high-level scripting language belonging to the Internet; JavaScript is based on prototype programming, A multi-paradigm dynamic scripting language that supports object-oriented, imperative and declarative programming, such as functional programming.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
The full name of js is JavaScript. It is a lightweight, literal, interpreted or just-in-time compiled high-level programming language with function priority. Although it is famous as a scripting language for developing Web pages, it Also used in many non-browser environments, JavaScript is a dynamic scripting language based on prototype programming, multi-paradigm, and supports object-oriented, imperative and declarative (such as functional programming) styles.
The JavaScript interpreter is called the JavaScript engine. It is part of the browser and is widely used in client-side scripting languages. It was first used on HTML (an application under the Standard Universal Markup Language) web page. Add dynamic functions to HTML web pages.
Components
ECMAScript, describes the syntax and basic objects of the language.
Document Object Model (DOM) describes the methods and interfaces for processing web content.
Browser Object Model (BOM) describes the methods and interfaces for interacting with the browser.
Basic characteristics of js
JavaScript is a scripting language that belongs to the Internet. It has been widely used in Web application development and is often used for Various dynamic functions are added to the web page to provide users with a smoother and more beautiful browsing effect. Usually JavaScript scripts realize their functions by embedding them in HTML.
1. JavaScript is an interpreted scripting language (the code is not precompiled).
2. JavaScript is mainly used to add interactive behaviors to HTML (an application under Standard Universal Markup Language) pages.
3. JavaScript can be directly embedded in HTML pages, but writing it as a separate js file is beneficial to the separation of structure and behavior.
4. JavaScript has cross-platform features and can run on multiple platforms (such as Windows, Linux, Mac, Android, iOS, etc.) with the support of most browsers.
Javascript scripting language, like other languages, has its own basic data types, expressions and arithmetic operators, and the basic program framework of the program. Javascript provides four basic data types and two special data types for processing data and text. Variables provide a place to store information, and expressions can complete more complex information processing.
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