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How to find the parent class name with known class in jQuery ?

  • Last Updated : 03 Aug, 2021

Given an HTML document and the task is to get the parent class of an element with the help of given class name.

Approach 1:

  • The on() method is used to select the event handler for selected elements. It means when the user clicks the button then the function call.
  • The closest() method is used to return the first ancestor of the selected elements.
  • Check if ancestor (parent) class exist then it returns the class name otherwise returns not exist.

Example: This example uses the closest() method to get the first matched ancestor of the element.




<!DOCTYPE html>
<html>
  
<head>
    <title>
        How to find a parent class
        name with a known class
    </title>
      
    <script src=
    </script>
</head>
  
<body style="text-align:center;">
      
    <h1 style="color:green;"
        GeeksForGeeks 
    </h1>
      
    <p id="GFG_UP" style=
        "font-size: 17px; font-weight: bold;">
    </p>
      
    <div class="parent">
        <div class="child"></div>
    </div>
      
    <button>
        click here
    </button>
      
    <p id="GFG_DOWN" style=
        "color: green; font-size: 24px; font-weight: bold;">
    </p>
      
    <script>
        $('#GFG_UP').text('Click on the button to see result');
        $('button').on('click', function() {
            var object = $('.child').closest('.parent');
              
            if (object.length) {
                $('#GFG_DOWN').text("className = '.child'"
                    + " with parentName = '.parent'" + " Exists");
            
            else {
                $('#GFG_DOWN').text("Not Exists");
            }
        });
    </script>
</body>
  
</html>

Output:

  • Before clicking the button:
  • After clicking the button:

Approach 2:



  • The on() method is used to select the event handler for selected elements. It means when the user clicks the button then the function call.
  • The parent() method is used to return all ancestor of the selected elements.
  • Check if ancestor (parent) class exist then it returns the class name otherwise returns not exist.

Example: This example uses the parents() method to get the all matched ancestors of the element.




<!DOCTYPE html>
<html>
  
<head>
    <title>
        How to find a parent class
        name with a known class
    </title>
      
    <script src=
    </script>
</head>
  
<body style="text-align:center;">
      
    <h1 style="color:green;"
        GeeksForGeeks 
    </h1>
      
    <p id="GFG_UP" style=
        "font-size: 17px; font-weight: bold;">
    </p>
      
    <div class="parent">
        <div class="child"></div>
    </div>
      
    <button>
        click here
    </button>
      
    <p id="GFG_DOWN" style=
        "color: green; font-size: 24px; font-weight: bold;">
    </p>
      
    <script>
        $('#GFG_UP').text('Click on the button to see result');
        $('button').on('click', function() {
            var object = $('.child').parents('.parent');
              
            if (object.length) {
                $('#GFG_DOWN').text("className = '.child'"
                    + " with parentName = '.parent'" + " Exists");
            }
            else {
                $('#GFG_DOWN').text("Not Exists");
            }
        });
    </script>
</body>
  
</html>

Output:

  • Before clicking the button:
  • After clicking the button:

jQuery is an open source JavaScript library that simplifies the interactions between an HTML/CSS document, It is widely famous with it’s philosophy of “Write less, do more”.
You can learn jQuery from the ground up by following this jQuery Tutorial and jQuery Examples.




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