HTML | DOM firstChild Property
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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