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This article mainly explains what tasks JavaScript is often used to accomplish. Friends who are interested 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 what tasks JavaScript is often used to accomplish.

JavaScript is the built-in scripting language of the browser, that is, the browser has a built-in JavaScript engine and provides various interfaces so that JavaScript scripts can control various functions of the browser; once the web page is embedded with a JavaScript script, the browser loads the web page and executes the script.

This article operating environment: Windows7 system, javascript1.8.5 version, DELL G3 computer

Is JavaScript built into the browser?

JavaScript is the built-in scripting language for browsers. In other words, the browser has a built-in JavaScript engine and provides various interfaces so that JavaScript scripts can control the various functions of the browser. Once the JavaScript script is embedded in the web page, the browser loads the web page and executes the script, so as to achieve the purpose of operating the browser and achieve various dynamic effects of the web page.

In general, a complete JavaScript consists of the following parts:

ECMAScript, which describes the syntax and basic objects of the language

Document object Model (DOM), which describes the methods and interfaces for processing web page content

Browser object model (BOM), which describes the methods and interfaces for interacting with browsers

The basic features of JavaScript are as follows:

Is an interpretive scripting language (the code is not precompiled).

It is mainly used to add interactive behavior to HTML pages.

You can embed a HTML page directly, but writing it as a separate js file facilitates the separation of structure and behavior.

JavaScript is commonly used to accomplish the following tasks:

Embed dynamic text into HTML pages

Respond to browser events

Read and write HTML elements

Validate data before it is submitted to the server

Detect the browser information of the visitor

Control cookie, including creation and modification, etc.

At this point, I believe you have a deeper understanding of what tasks JavaScript is often used to accomplish, so you might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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