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HTML | DOM Input Checkbox defaultChecked Property

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  • Difficulty Level : Basic
  • Last Updated : 24 Aug, 2022
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The Input Checkbox defaultChecked property in HTML is used to return the default value of checked attribute. It has a boolean value which returns true if the checkbox is checked by default, otherwise returns false.



Return Values: It returns a Boolean value that returns true if the checkbox is checked by default otherwise returns false.

Example: This example illustrates the Input Checkbox defaultChecked property. 


<!DOCTYPE html>
        DOM Input Checkbox defaultChecked Property
<body style="text-align:center;">
    <h1 style="color:green;">
    <h2>DOM Input Checkbox defaultChecked Property</h2>
    <form id="myGeeks">
        <!-- Below input elements have attribute
                 checked -->
        <input type="checkbox" name="check" id="GFG"
            value="1" Checked>Checked by default<br>
        <input type="checkbox" name="check" value="2">
        Not checked by default<br>
    <button onclick="myGeeks()">
    <p id="sudo" style="color:green;font-size:25px;"></p>
    <!-- Script to return the Input Checkbox
            defaultChecked Property -->
        function myGeeks() {
            var g = document.getElementById("GFG").defaultChecked;
            document.getElementById("sudo").innerHTML = g;

Before clicking on the Button: 

After clicking on the Button: 

Supported Browsers: The browser supported by DOM input Checkbox defaultchecked property are listed below: 

  • Google Chrome
  • Edge 12 and above
  • Opera
  • Apple Safari
  • Mozilla Firefox

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