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Pure JS code to realize interlaced color change and highlight when mouse moves into it

高洛峰Original: 2016-12-05 15:32:201512browse

In front-end development, we often see the effect of interlaced row color changing when the mouse moves into the highlight. The following editor will share with you the interlaced row color changing when the mouse moves into the highlight effect based on js code. Without further ado, the specific code is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#table {
width: 400px;
border-collapse: collapse;
}
</style>
</head>
<body>
<table id="table" border="1">
<thead>
<td>ID</td>
<td>姓名</td>
<td>年龄</td>
</thead>
<tbody>
<tr>
<td>1</td>
<td>黄艺</td>
<td>20</td>
</tr>
<tr>
<td>2</td>
<td>张三</td>
<td>21</td>
</tr>
<tr>
<td>3</td>
<td>李四</td>
<td>22</td>
</tr>
<tr>
<td>4</td>
<td>网无</td>
<td>23</td>
</tr>
</tbody>
</table>
</body>
<script type="text/javascript">
// 实现隔行变色，鼠标移入高亮
var table = document.getElementById("table");
var oldColor = "";//声明一个变量，保存表格原来的颜色
for(var i = 0; i < table.tBodies[0].rows.length; i++) {
//使用判断实现隔行变色
if(i % 2 == 0) {
table.tBodies[0].rows[i].style.backgroundColor = "gray";
} else {
table.tBodies[0].rows[i].style.backgroundColor = "#ccc";
}
//实现鼠标移入高亮
table.tBodies[0].rows[i].onmouseover = function() {
oldColor = this.style.backgroundColor;
this.style.backgroundColor = "red";
}
//实现鼠标移出变回原来的颜色
table.tBodies[0].rows[i].onmouseout = function() {
this.style.backgroundColor = oldColor;
}
}
</script>
</html>

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Pure JS code to realize interlaced color change and highlight when mouse moves into it

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