HTML | DOM ColumnGroup span Property
Last Updated :
28 Feb, 2022
The ColumnGroup span Property in HTML DOM is used to set or return the value of the span attribute of a colgroup element. The span attribute is used to define the number of column that a <colgroup> element should span.
Syntax:
Property Values: It contains single value number which specify the number of <colgroup> should span.
Return value: It returns a numeric value which represents the number of columns.
Example 1: This example returns the span property.
<!DOCTYPE html>
<html>
<head>
<title>
HTML DOM ColumnGroup span property
</title>
<style>
#myColGroup {
background: green;
}
table {
color: white;
margin-left: 180px;
background: yellow;
}
#Geek_p {
color: green;
font-size: 30px;
}
td {
padding: 10px;
}
</style>
</head>
<body style="text-align:center;">
<h1 style="color:green;">
GeeksForGeeks
</h1>
<h2>HTML | DOM ColumnGroup span Property</h2>
<table>
<colgroup id="myColGroup" span="2"></colgroup>
<tr>
<th>S.No</th>
<th>Title</th>
<th>Geek_id</th>
</tr>
<tr>
<td>Geek_1</td>
<td>GeekForGeeks</td>
<th>Geek_id_1</th>
</tr>
<tr>
<td>Geek_2</td>
<td>GeeksForGeeks</td>
<th>Geek_id_2</th>
</tr>
</table>
<br>
<button onclick="myGeeks()">
Click
</button>
<h4>
<p id="Geek_p" style="color:green"></p>
</h4>
<script>
function myGeeks() {
var x = document.getElementById("myColGroup").span;
document.getElementById("Geek_p").innerHTML = x;
}
</script>
</body>
</html>
|
Output:
Before Clicking the Button:
After Clicking the Button:
Example 2: This example sets the span Property.
<!DOCTYPE html>
<html>
<head>
<title>
HTML | DOM ColumnGroup span property
</title>
<style>
#myColGroup {
background: green;
}
table {
color: white;
margin-left: 180px;
background: yellow;
}
#Geek_p {
color: green;
font-size: 30px;
}
td {
padding: 10px;
}
</style>
</head>
<body style="text-align:center;">
<h1 style="color:green;">
GeeksForGeeks
</h1>
<h2>HTML | DOM ColumnGroup span Property</h2>
<table>
<colgroup id="myColGroup" span="2">
</colgroup>
<tr>
<th>S.No</th>
<th>Title</th>
<th>Geek_id</th>
</tr>
<tr>
<td>Geek_1</td>
<td>GeekForGeeks</td>
<th>Geek_id_1</th>
</tr>
<tr>
<td>Geek_2</td>
<td>GeeksForGeeks</td>
<th>Geek_id_2</th>
</tr>
</table>
<br>
<button onclick="myGeeks()">
Click
</button>
<h4>
<p id="Geek_p" style="color:green"></p>
</h4>
<script>
function myGeeks() {
var x = document.getElementById("myColGroup").span
= "4";
document.getElementById("Geek_p").innerHTML
= "The value of the span attribute was"
+ " changed to " + x;
}
</script>
</body>
</html>
|
Output:
Before Clicking the Button:
After Clicking the Button:
Supported Browsers: The browser supported by DOM Colgroup span property are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
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