HTML DOM ColumnGroup Object
The ColumnGroup Object in HTML DOM is used to represent the HTML <colgroup> element. This tag is used to set or return the properties of <colgroup> element. It can be accessed by using getElementById() method.
Syntax:
document.getElementById( "ColGroup_ID" );
This ColGroup_ID is assigned to HTML < colgroup > element.
Property Value:
- span: Used to set or return the value of the span attribute.
Example 1: This example returns the “ColumnGroup id” using document.getElementById(“myColGroup”).id;
html
<!DOCTYPE html> < html > < head > < title > HTML DOM ColumnGroup Object </ title > < style > #myColGroup { background: green; } table { color: white; margin: auto; background: blue; } #Geek_p { color: green; font-size: 30px; } td { padding: 10px; } </ style > </ head > < body style = "text-align:center;" > < h1 style = "color:green;" > w3wiki </ h1 > < h2 >HTML DOM ColumnGroup Object</ 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 >GeekForBeginner</ td > < th >Geek_id_1</ th > </ tr > < tr > < td >Geek_2</ td > < td >w3wiki</ td > < th >Geek_id_2</ th > </ tr > </ table > < br > < button onclick = "myBeginner()" > Click Here </ button > < h4 id = "GFG" style = "color:green;" ></ h4 > < script > function myBeginner() { // Access ColumnGroup element let x = document.getElementById("myColGroup").id; document.getElementById("GFG").innerHTML = x; } </ script > </ body > </ html > |
Output:
Example 2: This example returns the number of span element from “colgroup id” using document.getElementById(“myColGroup”).span;
html
<!DOCTYPE html> < html > < head > < title > HTML DOM ColumnGroup Object </ title > < style > #myColGroup { background: green; } table { color: white; margin: auto; background: blue; } td { padding: 10px; } </ style > </ head > < body style = "text-align:center;" > < h1 style = "color:green;" > w3wiki </ h1 > < h2 >HTML DOM ColumnGroup Object</ 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 >GeekForBeginner</ td > < th >Geek_id_1</ th > </ tr > < tr > < td >Geek_2</ td > < td >w3wiki</ td > < th >Geek_id_2</ th > </ tr > </ table > < br > < button onclick = "myBeginner()" > Click Here </ button > < h4 id = "GFG" style = "color:green" ></ h4 > < script > function myBeginner() { // Access ColumnGroup element let x = document.getElementById("myColGroup").span; document.getElementById("GFG").innerHTML = x; } </ script > </ body > </ html > |
Output:
Supported Browsers:
- Google Chrome
- Mozilla Firefox
- Edge
- Safari
- Opera