老师，请检查
来源：3-13 编程练习
慕芸芸
2023-02-07 09:12:37
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
ul li{
cursor: pointer;
}
.current{
color: red;
font-size: 20px;
}
</style>
</head>
<body>
<ul>
<li data-n="HTML">HTML</li>
<li data-n="CSS">CSS</li>
<li data-n="JavaScript">JavaScript</li>
<li data-n="jquery">jquery</li>
<li data-n="HTML5">HTML5</li>
<li data-n="CSS3">CSS3</li>
<li data-n="ES6">ES6</li>
</ul>
<script>
let lis=document.getElementsByTagName('li');
for(let i=0;i<lis.length;i++){
lis[i].onmouseenter=function(e){
e.target.innerHTML+='我是第'+(i+1)+'个';
e.target.className='current';
}
lis[i].onmouseleave=function(e){
e.target.innerHTML=e.target.getAttribute('data-n');
e.target.className='';
}
}
</script>
</body>
</html>写回答
1回答
-
好帮手慕久久
2023-02-07
同学你好，代码正确，很棒，祝学习愉快！
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