createComment() method
HTML DOM createComment() Method
Instance
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<p id="demo">单击按钮改HTML文档添加一个注释</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
var c=document.createComment("My personal comments");
document.body.appendChild(c);
var x=document.getElementById("demo");
x.innerHTML="这个文件现在包含一个注释,但如你所知,注释是看不见的。";
};
</script>
</body>
</html>Run Example»
Click the "Run Example" button to view the online example
Definition and usage
The createComment() method can create a comment node.
Browser support
All major browsers support the createComment() method
Syntax
document.createComment(text)
Parameters
| Parameters | Type | Description |
|---|---|---|
| text | String | Optional. Comment text to add. |
Return value
| Type | Description |
|---|---|
| Comment object | Created comment node |
Technical details
| DOM version | Core Level 1 Document Object |
|---|
