What are the functions of javascript

The functions of javascript are: 1. Embed dynamic text in HTML pages; 2. Respond to browser events; 3. Read and write HTML elements; 4. Verify data before the data is submitted to the server; 5. Detect visitors' browser information; 6. Perform server-side programming based on Node.js technology.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

JavaScript ("JS" for short) is a lightweight, interpreted or just-in-time compiled programming language with function priority. Although it is famous as a scripting language for developing Web pages, it is 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) style.

JavaScript was first designed and implemented on the Netscape Navigator browser in 1995 by Brendan Eich of Netscape. Because Netscape was working with Sun, Netscape management wanted it to look like Java, hence the name JavaScript. But in fact its grammatical style is closer to Self and Scheme.

The standard for JavaScript is ECMAScript. As of 2012, all browsers fully support ECMAScript 5.1, and older browsers support at least the ECMAScript 3 standard. On June 17, 2015, ECMA International released the sixth edition of ECMAScript, which is officially called ECMAScript 2015, but is often called ECMAScript 6 or ES2015.

JavaScript has the following functions:

1. Embed dynamic text in HTML pages.

2. Respond to browser events.

3. Read and write HTML elements.

4. Verify data before it is submitted to the server.

5. Detect the visitor’s browser information. Control cookies, including creation and modification.

6. Server-side programming based on Node.js technology.

Recommended study: "javascript advanced tutorial"

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