HTML DOM isId Property
The isId Property contains a boolean value that 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: In this example, we will use isId Property.
html
<!DOCTYPE html> < html > < head > < title > DOM isID property </ title > </ head > < body > < center > < h1 style = "color:green;" >w3wiki</ h1 > < h2 > DOM isId Property</ h2 > < button onclick = "Beginner()" >Submit</ button > < p id = "sudo" ></ p > < script > function Beginner() { let x = document.getElementById("sudo"); x.innerHTML = x.attributes[0].isId; } </ script > </ center > </ body > </ html > |
Output:
Supported Browser: No major browser support the DOM isID property.
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