HTML | DOM hasChildNodes() Method
The HTML hasChildNodes() property will return true if the given node has a child node or false if it doesn’t have any child nodes. A blank line or whitespace is also treated a child node so it also returns true on a blank line or whitespace.
Prerequisite DOM (Document Object Model)
Parameters:
No parameters required.
Return value: The HTML nodeValue property returns the following type of values.
- True if the given node has a child or blank space or a blank line.
- False if the given node doesn’t have any child.
Syntax
node.hasChildNodes()
Example-1: In the following paragraph tag has nothing so its return false
HTML
<!DOCTYPE html><html><body> <head> <script> // utility function to demonstrate hasChildNode Property function exampleFunction() { // var x used to get the information of those node // for which you want to perform // hasChildNode properties var res = document.getElementById("divId").hasChildNodes(); document.getElementById("GeeksForGeeks"+ ).innerHTML = res; } </script> </head> <!--In this example we will create a node of the type div and a button which calls a function name "exampleFunction" on clicking of this button it will show the properties of hasChildNode property --> <p id="divId"></p> <br> <button onclick="exampleFunction()"> click to know the paragraph tag has any child node </button> <!-- below paragraph Tag is used to print the value of nodeValue properties--> <p id="GeeksForGeeks"></p></body></html> |
Output:
Example-2 :In the following paragraph tag has a massage so its return true
HTML
<!DOCTYPE html><html><body> <head> <script> // utility function to demonstrate hasChildNode Property function exampleFunction() { // var x used to get the information of those nodes // for which you want to perform // hasChildNode properties. var res = document.getElementById("divId").hasChildNodes(); document.getElementById("GeeksForGeeks"+ ).innerHTML = res; } </script> </head> <!--In this example we will create a node of the type div and a button which calls a function name "exampleFunction" on clicking of this button it will show the properties of hasChildNode property --> <p id="divId">Hello geeksforgeeks</p> <br> <button onclick="exampleFunction()"> click to know the paragraph tag has any child </button> <!-- below paragraph Tag is used to print the value of nodeValue properties--> <p id="GeeksForGeeks"></p></body></html> |
Output:
Supported Browsers: The browser supported by DOM click() Method are listed below:
- Google Chrome 1 and above
- Apple Safari 1 and above
- Firefox 1 and above
- Opera 12.1 and above
- Edge 12 and above
- Internet Explorer 6 and above
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