方式一：纯js语句，通过id属性实现表格隔行换色
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script>
window.onload = function() {
//1、获取表格
var tblEle = document.getElementById("tbl");
//2、获取表格中tbody里面的行数
var len = tblEle.tBodies[0].rows.length;
//3、对tbody里面的行进行遍历
for (var i = 0; i < len; i++) {
if (i % 2 == 0) {
tblEle.tBodies[0].rows[i].style.backgroundColor = "yellow";
} else {
tblEle.tBodies[0].rows[i].style.backgroundColor = "green";
}
}
}
</script>
</head>
<body>
<table border="1" width="500" height="50" align="center" id="tbl">
<thead>
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>张三</td>
<td>22</td>
</tr>
<tr>
<td>2</td>
<td>李四</td>
<td>25</td>
</tr>
<tr>
<td>3</td>
<td>王五</td>
<td>27</td>
</tr>
<tr>
<td>4</td>
<td>赵六</td>
<td>29</td>
</tr>
<tr>
<td>5</td>
<td>田七</td>
<td>30</td>
</tr>
<tr>
<td>6</td>
<td>汾九</td>
<td>20</td>
</tr>
</tbody>
</table>
</body>
</html>
方式二：jq与js混合方式，通过class属性实现
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="../js/jquery-1.8.3.js" ></script>
<script>
window.onload = function() {
//1、获取表格
var tblEle = $(".tbl")[0];
//2、获取表格中tbody里面的行数
var len = tblEle.tBodies[0].rows.length;
//3、对tbody里面的行进行遍历
for (var i = 0; i < len; i++) {
if (i % 2 == 0) {
tblEle.tBodies[0].rows[i].style.backgroundColor = "yellow";
} else {
tblEle.tBodies[0].rows[i].style.backgroundColor = "green";
}
}
}
</script>
</head>
<body>
<table border="1" width="500" height="50" align="center" class="tbl">
<thead>
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>张三</td>
<td>22</td>
</tr>
<tr>
<td>2</td>
<td>李四</td>
<td>25</td>
</tr>
<tr>
<td>3</td>
<td>王五</td>
<td>27</td>
</tr>
<tr>
<td>4</td>
<td>赵六</td>
<td>29</td>
</tr>
<tr>
<td>5</td>
<td>田七</td>
<td>30</td>
</tr>
<tr>
<td>6</td>
<td>汾九</td>
<td>20</td>
</tr>
</tbody>
</table>
</body>
</html>