<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<table border="1px">
<thead>
<tr>
<th>
股票名称
</th>
<th>
涨跌幅
</th>
</tr>
</thead>
<tbody>
<tr>
<td>同花顺</td>
<td>0.033</td>
</tr>
<tr>
<td>同花</td>
<td>0.034</td>
</tr>
<tr>
<td>同顺</td>
<td>0.023</td>
</tr>
<tr>
<td>花</td>
<td>0.038</td>
</tr>
<tr>
<td>顺</td>
<td>0.013</td>
</tr>
<tr>
<td>同</td>
<td>0.031</td>
</tr>
</tbody>
</table>
</body>
<script type="text/javascript">
var tr = document.getElementsByTagName(‘tr‘)
var trr = [...tr]
trr.shift()
console.log(trr)
trr.map(item=>{
item.onclick = ()=>{
console.log(item.children[0].innerHTML + ‘:‘ +(item.children[1].innerHTML * 100).toFixed(2) + ‘%‘)
}
})
</script>
</html>
用原生js实现点击单元格输出单元格中的值转换成百分比（保留两位小数）和该单元格对应的表头，如'同花顺：3.30%'
原文：https://www.cnblogs.com/lfnumber7/p/12612357.html