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HTML | DOM Input Checkbox defaultChecked Property

  • Difficulty Level : Basic
  • Last Updated : 15 Oct, 2020
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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.



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
  • Internet Explorer
  • Firefox
  • Opera
  • Safari


Attention reader! Don’t stop learning now. Get hold of all the important HTML concepts with the Web Design for Beginners | HTML  course.

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