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How to remove CSS property using JavaScript?
  • Last Updated : 14 May, 2019

Method 1: Using CSS removeProperty: The CSSStyleDeclaration.removeProperty() method is used to remove a property from a style of an element. The style of the element is selected by going through the styleSheets array and selecting the cssRule. The removeProperty method can then be specified with the property to be removed.

Syntax:

element.removeProperty('property')

Example-1:




<!DOCTYPE html>
<html>
  
<head>
    <title>
      How to remove CSS property using JavaScript?
  </title>
    <style>
        .elem {
            color: green;
            font-size: 3rem;
            text-decoration: underline;
        }
    </style>
</head>
  
<body>
    <h1 style="color: green">
      GeeksForGeeks
  </h1>
    <b>
      How to remove CSS property using JavaScript?
  </b>
    <div class="elem">Hello World!</div>
    <p>
      Click on the button below to remove
      the text decoration of the element
  </p>
    <button onclick="removeProperty()">
      Remove text-decoration property
  </button>
    <script>
        function removeProperty() {
            element = 
              document.styleSheets[0].cssRules[0].style;
            element.removeProperty('text-decoration');
        }
    </script>
</body>
  
</html>


Output:

  • Before clicking the button:
    removeProperty-before
  • After clicking the button:
    removeProperty-after

Method 2: Using the setProperty method: The CSSStyleDeclaration.setProperty() method can be used to set the required property of the style. The element of which the property has to be removed is selected and this property is applied to its style property. Setting this property to ‘initial’ resets the property to its initial value, removing any effect of the property.



Syntax:

element.style.setProperty('color', 'initial')

Example:




<!DOCTYPE html>
<html>
  
<head>
    <title>
      How to remove CSS property using JavaScript?
  </title>
    <style>
        .elem {
            color: green;
            font-size: 3rem;
            text-decoration: underline;
        }
    </style>
</head>
  
<body>
    <h1 style="color: green">
      GeeksForGeeks
  </h1>
    <b>
      How to remove CSS property using JavaScript?
  </b>
    <div class="elem">Hello World!</div>
    <p>
      Click on the button below to remove the text
      color of the element
  </p>
    <button onclick="removeProperty()">
      Remove color property
  </button>
    <script>
        function removeProperty() {
            element = document.querySelector('.elem');
            element.style.setProperty('color', 'initial');
        }
    </script>
</body>
  
</html>


Output:

  • Before clicking the button:
    setProp-before
  • After clicking the button:
    setProp-after

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