The HTML DOM input checkbox checked property returns and alter the value of checked attribute of a checkbox in HTML.
syntax
Following is the syntax −
1. Returning checked
object.checked
2. Altering checked
object.checked = true|false
Example
Let us see an example of HTML DOM Input Checkbox checked property −
<!DOCTYPE html>
<html>
<head>
<title>HTML DOM checked property</title>
<style>
body{
text-align:center;
}
p{
font-size:1.5rem;
color:#ff8741;
}
input{
width:30px;
height:30px;
}
button{
background-color:#db133a;
color:#fff;
padding:8px;
border:none;
width:120px;
margin:0.5rem;
border-radius:50px;
outline:none;
}
</style>
</head>
<body>
<h1>checked Property Example</h1>
<p>Are you happy?</p>
<input type="checkbox">
<br>
<button onclick="yes()">Yes</button>
<button onclick="no()">No</button>
<script>
function yes() {
document.querySelector("input").checked = true;
}
function no() {
document.querySelector("input").checked = false;
}
</script>
</body>
</html>output
This will produce the following output −
Click on “Yes” button to check the box.
Now, click on “No” button to uncheck the box.
