Can Javascript be commented with double slashes?

In JavaScript, you can use double slashes to comment; use "//" to make single-line comments on JavaScript code, the syntax is "//single-line comment content", use "/*" and "*/ "You can make multi-line comments on JavaScript code, and the syntax is "/*Multi-line comment content*/".

The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.

Can JavaScript be commented with double slashes?

We can add comments to explain JavaScript or improve the readability of the code.

Single-line comments begin with // .

This example uses a single-line comment to explain the code:

Example

// 输出标题：
document.getElementById("myH1").innerHTML="欢迎来到我的主页";
// 输出段落：
document.getElementById("myP").innerHTML="这是我的第一个段落。";

Multi-line comments start with /* and end with */.

The following example uses multi-line comments to explain the code:

Example

/*
下面的这些代码会输出
一个标题和一个段落
并将代表主页的开始
*/
document.getElementById("myH1").innerHTML="欢迎来到我的主页";
document.getElementById("myP").innerHTML="这是我的第一个段落。";

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