The HTML DOM hasAttribute() method is a boolean function that returns either true or false but not both. This method returns a true value if the element contains an attribute otherwise, it returns false. It is very useful to know whether the element in the document has attributes or not.
Syntax:
node.hasAttributes()
Parameters: It does not contain any parameter.
Return Value: It returns true if the element contains an attribute otherwise it returns false.
Example 1: In this example, we will see that the hasAttribute() comes out to be true when we have an attribute in our body.
HTML
<!DOCTYPE html>
< html >
< head >
< title >
DOM hasAttributes() Method
</ title >
</ head >
< body id = "geeks" >
< center >
< h1 style = "color:green;width:50%;" id = "sudo" >
GeeksForGeeks
</ h1 >
< h2 >DOM hasAttributes() Method </ h2 >
< p >Click on the button to check if that body
element has any attributes</ p >
< button type = "button" onclick = "geeks()" >
Submit
</ button >
< script >
function geeks() {
let s = document.body.hasAttributes();
document.getElementById('gfg').innerHTML = s;
}
</ script >
< p id = "gfg" ></ p >
</ center >
</ body >
</ html >
|
Output:
Example 2: In this example, the hasAttribute() returns false as there is no attribute in our head.
HTML
<!DOCTYPE html>
< html >
< head >
< title >
DOM hasAttributes() Method
</ title >
</ head >
< body >
< center >
< h1 style = "color:green;width:50%;" id = "sudo" >
GeeksForGeeks
</ h1 >
< h2 >DOM hasAttributes() Method </ h2 >
< p >Click on the button to check if that
head element has any attributes</ p >
< button type = "button" onclick = "geeks()" >
Submit
</ button >
< script >
function geeks() {
let s = document.head.hasAttributes();
document.getElementById('gfg').innerHTML = s;
}
</ script >
< p id = "gfg" ></ p >
</ center >
</ body >
</ html >
|
Output:
We have a complete list of HTML DOM methods, to check those please go through this HTML DOM Object Complete reference article.
Supported Browsers: The browser supported by DOM hasAttributes() method are listed below:
- Google Chrome 1 and above
- Edge 12 and above
- Internet Explorer 8 and above
- Firefox 1 and above
- Opera 12.1 and above
- Safari 1 and above
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.