HTML DOM firstChild Property
Last Updated :
13 Jun, 2023
The DOM firstChild Property is used to return the firstchild Node of its parent node element. It is read-only property and may return an element node, a text node or a comment node.
Syntax:
node.firstChild
Return Value: It returns a string value which represent the first child of a node. If the element does not have a child node then it returns a null value.
Note: Whitespace inside the parent elements is considered as text, and text is considered as nodes.
Example-1:
html
<!DOCTYPE html>
< html >
< head >
< style >
h1 {
color: green;
}
</ style >
</ head >
< body style = "margin-left:140px;" >
< h1 >GeeksForGeeks</ h1 >
< h2 >DOM firstChild Property </ h2 >
< p >List of sorting::</ p >
< ul id = "GFG" >< li >Merge Sort</ li >
< li >Quick Sort</ li >
< li >Selection Sort</ li >
< li >Bubble Sort</ li >
</ ul >
< button onclick = "Geeks()" >Submit</ button >
< p id = "sudo" ></ p >
< script >
function Geeks() {
var x =
document.getElementById("GFG").firstChild.innerHTML;
document.getElementById("sudo").innerHTML = x;
}
</ script >
</ body >
</ html >
|
Output:
Before clicking on the Button:
After clicking on the button:
Example-2: To get the node name of the first child-
html
<!DOCTYPE html>
< html >
< head >
< style >
h1 {
color: green;
}
#GFG {
font-size: 20px;
}
</ style >
</ head >
< body style = "margin-left:140px;" >
< h1 >GeeksForGeeks</ h1 >
< h2 >DOM firstChild Property </ h2 >
< div id = "GFG" >
< p >first Node</ p >
< span >Second Node</ span >
< p >ThirdNode</ p >
</ div >
< br >
< button onclick = "Geeks()" >Submit</ button >
< p id = "sudo" style = "font-size:25PX;" ></ p >
< script >
function Geeks() {
var x =
document.getElementById("GFG").firstChild.nodeName;
document.getElementById("sudo").innerHTML =
"node name of the first child node "
+ "of a < div > element:" + x;
}
</ script >
</ body >
</ html >
|
Output:
Before clicking on the button:
After clicking on the button:
Supported Browsers: The browser supported by DOM firstChild property are listed below:
- Google Chrome 1.0
- Edge 12.0
- Internet Explorer 6.0
- Firefox 1.0
- Opera 12.1
- Safari 1.0
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