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JavaScript - check if element / node has attribute

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Dirask Community
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In this article, we would like to show you how to check if element / node has the attribute in JavaScript.

Quick solution:

var myElement = document.querySelector('#element-id');  // get element by id

myElement.hasAttribute(attributeName);  // check if element has the attribute

 

Practical example

In this example, we will check if myDiv element has class and onclick attributes using hasAttribute() method.

// ONLINE-RUNNER:browser;

<!DOCTYPE html>
<html>
  <head>
    <style>
      .blue {
        background: lightblue;
      }
    </style>
  </head>
  <body>
    <div id="my-div" class="blue">This is my div.</div>
    <script>
      var myDiv = document.querySelector('#my-div');    // get element by id
      var classCheck = myDiv.hasAttribute('class');     // check if myDiv has class attribute
      var onclickCheck = myDiv.hasAttribute('onclick'); // check if myDiv has onclick attribute
      console.log(classCheck);    // true
      console.log(onclickCheck);  // false
    </script>
  </body>
</html>
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