How to modify the content of h4 tag in javascript
Modification method: 1. Use the "document.getElementById("id value")" statement to select the h4 tag node based on the id attribute value; 2. Use "h4 tag node.innerHTML = "Modified content"; " statement can modify the content of the h4 tag.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
The
tag defines the fourth-level heading in an HTML document.
So how does javascript modify the content of the h4 tag?
Implementation idea:
First select the h4 node
Then use the innerHTML attribute to modify the node content
Implementation code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<h1 id="一级标题">一级标题</h1>
<h2 id="二级标题">二级标题</h2>
<h3 id="三级标题">三级标题</h3>
<h4 id="四级标题">四级标题</h4>
<h5 id="五级标题">五级标题</h5>
<h6 id="六级标题">六级标题</h6>
<button onclick="myFunction()"> 修改h4标签的内容</a>
<script type="text/javascript">
function myFunction() {
var h4 = document.getElementById("h4");
h4.innerHTML = "新四级标题，内容已修改";
}
</script>
</body>
</html>
[Related recommendations: javascript learning tutorial 】
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