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How to remove class in javascript

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Release： 2022-01-19 14:58:16
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Method: 1. Use the "document.getElementsByTagName("Element")" statement to obtain the element object whose class needs to be removed; 2. Use the "Element Object.removeAttribute("class")" statement to remove the class of the specified element. That’s it.

How to remove class in javascript

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

How to remove class in javascript

The removeAttribute() method can delete the specified attribute

The syntax is: 

element.removeAttribute(attributename)
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Attributename is used to specify the name of the attribute to be deleted.​

This method has no return value.

The example is as follows: 

<html>
<head>
<meta charset="utf-8">
<title>123</title>
    <style>
        .red{
            color:red;
        }
        </style>
</head>
<body>
<h1 class="red">Hello World</h1>
<p id="demo">点击下面的按钮删除上面的标题的样式属性</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
    document.getElementsByTagName("H1")[0].removeAttribute("class"); 
};
</script>
</body>
</html>
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Output result:

How to remove class in javascript

After clicking the button:

How to remove class in javascript

Related recommendations: javascript learning tutorial

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