How to get the child element of a parent using JavaScript ?

Given an HTML document and the task is to select a particular element and get all the child element of the parent element with the help of JavaScript.

Approach 1:

  • Select an element whose child element is going to be selected.
  • Use .children property to get access of all the children of element.
  • Select the particular child based on index.

Example 1: This example implements the above approach.



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<!DOCTYPE HTML> 
<html
  
<head
    <title
        Finding child element of parent with pure JavaScript.
    </title>
      
    <style>
        .parent {
            background: green;
            color: white;
        }
        .child {
            background: blue;
            color: white;
            margin: 10px;
        
    </style>
</head
  
<body style = "text-align:center;"
      
    <h1 style = "color:green;"
        GeeksForGeeks 
    </h1
      
    <p id = "GFG_UP" style
            "font-size: 15px; font-weight: bold;"
    </p>
      
    <div class="parent" id = "parent">
        Parent
        <div class="child">
            Child
        </div>
    </div>
      
    <br>
      
    <button onclick = "GFG_Fun()">
        click here
    </button>
  
    <p id = "GFG_DOWN" style
        "font-size: 24px; font-weight: bold; color: green;"
    </p>
      
    <script
        var up = document.getElementById('GFG_UP');
        var down = document.getElementById('GFG_DOWN');
        up.innerHTML = "Click on the button select the child node."; 
          
        function GFG_Fun() {
            parent = document.getElementById('parent');
            children = parent.children[0];
            down.innerHTML = "Text of child node is - '" 
                    + children.innerHTML + "'";
        
    </script
</body
  
</html>

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Output:

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

Approach 2:

  • Select the parent element whose child element is going to be selected.
  • Use .querySelector() method on parent.
  • Use the className of child to select that particular child.

Example 2: This example implements the above approach.

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<!DOCTYPE HTML> 
<html
  
<head
    <title
        How to get the child element of
        a parent using JavaScript ?
    </title>
      
    <style>
        .parent {
            background: green;
            color: white;
        }
        .child1 {
            background: blue;
            color: white;
            margin: 10px;
        
        .child2 {
            background: red;
            color: white;
            margin: 10px;
        
    </style>
</head
  
<body style = "text-align:center;"
      
    <h1 style = "color:green;"
        GeeksForGeeks 
    </h1
      
    <p id = "GFG_UP" style
            "font-size: 15px; font-weight: bold;"
    </p>
      
    <div class="parent" id = "parent">
        Parent
        <div class="child child1">
            Child1
        </div>
          
        <div class="child child2">
            Child2
        </div>
    </div>
      
    <br>
      
    <button onclick = "GFG_Fun()">
        click here
    </button>
      
    <p id = "GFG_DOWN" style
        "font-size: 24px; font-weight: bold; color: green;"
    </p>
      
    <script
        var up = document.getElementById('GFG_UP');
        var down = document.getElementById('GFG_DOWN');
        up.innerHTML = "Click on the button select the child node."; 
          
        function GFG_Fun() {
            parent = document.getElementById('parent');
            children = parent.querySelectorAll('.child');
              
            down.innerHTML = "Text of child node is - '"
                    + children[0].innerHTML + "' and '"
                    + children[1].innerHTML + "'";
        
    </script
</body
  
</html>

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Output:

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


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