当鼠标落在表格某一行行，某一行变粉色 当离开恢复原色
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
table {
800px;
margin: 100px;
text-align: center;
border-collapse: collapse;
font-size: 14px;
}
thead tr {
height: 20px;
background-attachment: skyblue;
}
tbody tr {
height: 30px;
}
tbody td {
border-bottom: 1px;
font-size: 12px;
color: blue;
}
.bg {
background-color: pink;
}
</style>
</head>
<body>
<table>
<thead>
<tr>
<th>代码</th>
<th>名称</th>
<th>最新公布净值</th>
<th>累计净值</th>
<th>前单位净值</th>
<th>净增长率</th>
</tr>
</thead>
<tbody>
<tr>
<td>112</td>
<td>农银金穗3个月定期开放债券</td>
<td>1.083</td>
<td>1.08</td>
<td>1.009</td>
<td>+0.33%</td>
</tr>
<tr>
<td>113</td>
<td>农银金穗3个月定期开放债券</td>
<td>1.083</td>
<td>1.08</td>
<td>1.009</td>
<td>+0.33%</td>
</tr>
<tr>
<td>114</td>
<td>农银金穗3个月定期开放债券</td>
<td>1.083</td>
<td>1.08</td>
<td>1.009</td>
<td>+0.33%</td>
</tr>
<tr>
<td>115</td>
<td>农银金穗3个月定期开放债券</td>
<td>1.083</td>
<td>1.08</td>
<td>1.009</td>
<td>+0.33%</td>
</tr>
<tr>
<td>116</td>
<td>农银金穗3个月定期开放债券</td>
<td>1.083</td>
<td>1.08</td>
<td>1.009</td>
<td>+0.33%</td>
</tr>
</tbody>
</table>
<script>
//1.获取元素 获取的是tbody里面所有的行
var trs = document.querySelector('tbody').querySelectorAll('tr');
//2.利用循环 绑定注册事件
for(var i = 0 ; i < trs.length ;i++)
{
//3.鼠标经过事件onmouseover
trs[i].onmouseover = function() {
console.log('绑定成功');
this.className = 'bg';
}
trs[i].onmouseout = function() {
this.className = '';
}
}
</script>
</body>
</html>