Detailed introduction to writing methods and comments in JavaScript

JavaScript is the script language that runs on the browser side. JavaScript mainly solves the problem of Issues with front-end interaction with users, includingUsing interaction to interact with data. JavaScript is interpreted and executed by the browser. The front-end scripting language also includes JScript (unique to Microsoft and IE), ActionScript( Adobe company, plug-in required), etc.

AnimationEffect 3. JavaScript: PageBehavior: Some animation effects, interaction between the page and the user, page functions

Three ways to write JavaScript: embedded - external link - inline

Inline:

*

Write directly inside the tag"

onclick="alert('helloworld')""Embedded (embedded)

*

Writing method" <script><span style="font-family:Consolas; color:red; background:#F7F7F7"><strong> alert('hello world')</script>

scriptCan be anywhere in html

1.

js File,Write jscode inside the file2. Pass " ##>

Comments of js

1. ## are divided into single-line comments and multi-line comments

2. Single-line comments//

3. Multi-line comments/ Content to comment /

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