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.
<!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.
<!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.