HTML DOM td / th colSpan property
td / th objects Definition and Usage
colSpan property sets or returns the number of table columns spanned yuan.
grammar
Setting colSpan properties:
tdObject.colSpan="number"
或者
thObject.colSpan="number"
或者
thObject.colSpan="number"
Back colSpan properties:
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 |
Browser Support
All major browsers support colSpan property
Examples
Examples
The following example changes the number of columns across the table element:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script>
function displayResult(){
document.getElementById("myHeader1").colSpan="2";
}
</script>
</head>
<body>
<table border="1">
<tr>
<th id="myHeader1">月份</th>
<th id="myHeader2">存款</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()">改变第一个单元格的横跨列数</button>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script>
function displayResult(){
document.getElementById("myHeader1").colSpan="2";
}
</script>
</head>
<body>
<table border="1">
<tr>
<th id="myHeader1">月份</th>
<th id="myHeader2">存款</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()">改变第一个单元格的横跨列数</button>
</body>
</html>
try it"
td / th objects