Why are there three ways to write comments in JavaScript?

Three ways to write comments in JavaScript: 1. Multi-line comments, the syntax "/* Content to be commented */"; 2. Single-line comments, the syntax "// Content to be commented"; 3. "< ;!-- Content to comment".

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

JavaSciprt comments will not be read by the browser and will be automatically skipped. Writing comments is important for you to go back and check quickly later. When writing comments, try to be concise and detailed. Let’s talk about the comments. Three basic ways

1. Multi-line comments

Syntax:

/* 这里写上要注释的东西*/

2. Single-line comments

Grammar:

// 要注释的内容

3, <!--

## Grammar:

<!-- 要注释的内容

Although in strict mode No error is reported, but this method is not recommended because it is easily confused with the HTML comment method.

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