HTML | DOM isId Property
The isId Property contains a boolean value which returns a true if the Element has an attribute type of ID, otherwise, it returns a false or undefined value. This Property is used for read-only.
Syntax:
attribute.isId
Return Value: It returns a Boolean value i.e true if the attribute type is ID, else it returns a false .
Example:
html
<!DOCTYPE html><html><head> <title>DOM isID property</title></head><body> <center> <h1 style="color:green;">GeeksforGeeks</h1> <h2> DOM isId Property</h2> <button onclick="geeks()">Submit</button> <p id="sudo"></p> <script> function geeks() { var x = document.getElementById("sudo"); x.innerHTML = x.attributes[0].isId; } </script> </center></body></html> |
Output:
Before clicking the submit button:
After clicking the submit button:
Supported Browser: No major browser support the DOM isID property.
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