innerhtml
我无法改变标签的内容
代码是这样的
效果图是这样的
慕工程7262584
2017-08-11
4 回答
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" Content="text/html; charset=utf-8" />
<title>innerHTML</title>
<style>
h2{font-size:16px;color:blue;}
</style>
</head>
<body>
<h2 id="con">javascript</h2>
<script>
var num = document.getElementById("con");
document.write("原标题"+num.innerHTML+"<br>");
num.innerHTML = ("很好一定好好学习！");
document.write("修改后的标题："+num.innerHTML);
</script>
</body>
</html>
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