HTML | DOM Input Checkbox checked Property
The DOM Input Checkbox Property is used to set or return the checked status of a checkbox field. This property is used to reflect the HTML Checked attribute.
Syntax:
- It is used to return the checked property.
checkboxObject.checked
- It is used to set the checked property.
checkboxObject.checked = true|false
Property Values:
- true: It defines that checkbox is in checked state.
- false: It specify that the checkbox is not checked. It is false by default.
Return Value: It returns a boolean value which represents that whether the checkbox is checked or not.
Example: This example illustrates how to return the Checkbox Checked Property.
HTML
<!DOCTYPE html><html><head> <title>DOM Input Checkbox Checked Property</title></head><body style="text-align: center;"> <h1 style="color: green;">GeeksforGeeks</h1> <h2>DOM Input Checkbox checked Property</h2> <form> <!-- 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> </form> <br> <button onclick="myGeeks()">Submit</button> <p id="sudo" style="color:green;font-size:20px;"></p> <script> function myGeeks() { var g = document.getElementById("GFG").checked; document.getElementById("sudo").innerHTML = g; } </script></body></html> |
Output:
Before clicking on the button:
After clicking on the button:
Example-2: This example illustrates that how to check and uncheck the checkbox.
HTML
<!DOCTYPE html><html><head> <title>DOM Input Checkbox Checked Property</title></head><body style="text-align: center;"> <h1 style="color: green;">GeeksforGeeks</h1> <h2>DOM Input Checkbox checked Property</h2> <form> <!-- Below input elements have attribute "checked" --> <input type="checkbox" name="check" id="GFG" value="1">Checked by default<br> <input type="checkbox" name="check" value="2"> Not checked by default<br> </form> <br> <button onclick="myGeeks()">checkt</button> <button onclick="Geeks()">Uncheck</button> <script> function myGeeks() { var g = document.getElementById("GFG").checked = true; } function Geeks() { var w = document.getElementById("GFG").checked = false; } </script></body></html> |
Output:
Before clicking on the button:
After clicking on the check button:
After clicking on the uncheck button:
Supported Browsers: The browser supported by DOM input Checkbox Checked Property are listed below:
- Google Chrome
- Edge 12 and above
- Opera
- Apple Safari
- Mozilla Firefox
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