colspan
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td/th colSpan 属性
定义和用法
colSpan 属性可设置或返回表元横跨的列数。
语法
设置 colSpan 属性：
tdObject.colSpan="number"
或者
thObject.colSpan="number"
或者
thObject.colSpan="number"
返回 colSpan 属性：
tdObject.colSpan
或者
thObject.colSpan
或者
thObject.colSpan
Tip: There is no default value for the colSpan property.
| 值 | 描述 |
|---|---|
| number | 定义横跨的列数 |
浏览器支持
所有主要浏览器都支持 colSpan 属性
实例
下面的例子更改了表元横跨的列数：
<html>
<head>
<script>
function displayResult()
{
document.getElementById("myHeader1").colSpan="2";
}
</script>
</head>
<body>
<table border="1">
<tr>
<th id="myHeader1">Month</th>
<th id="myHeader2">Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100.00</td>
</tr>
<tr>
<td>February</td>
<td>$10.00</td>
</tr>
<tr>
<td>March</td>
<td>$80.00</td>
</tr>
</table>
<br>
<button type="button" onclick="displayResult()">Change colSpan for the first cell</button>
</body>
</html>
<head>
<script>
function displayResult()
{
document.getElementById("myHeader1").colSpan="2";
}
</script>
</head>
<body>
<table border="1">
<tr>
<th id="myHeader1">Month</th>
<th id="myHeader2">Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100.00</td>
</tr>
<tr>
<td>February</td>
<td>$10.00</td>
</tr>
<tr>
<td>March</td>
<td>$80.00</td>
</tr>
</table>
<br>
<button type="button" onclick="displayResult()">Change colSpan for the first cell</button>
</body>
</html>