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Radio checked Property

Radio Object Reference Radio Object

Definition and Usage

The checked property sets or returns the checked state of a radio button.

Syntax

Set the checked property:

radioObject.checked=true|false

Return the checked property:

radioObject.checked


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The checked property is supported in all major browsers.


Example

Example

Check and un-check the "Red" radio button:

<html>
<head>
<script>
function check()
  {
  document.getElementById("red").checked=true
  }
function uncheck()
  {
  document.getElementById("red").checked=false
  }
</script>
</head>
<body>

<form>
What color do you prefer?<br>
<input type="radio" name="colors" id="red">Red<br>
<input type="radio" name="colors" id="blue">Blue<br>
<input type="radio" name="colors" id="green">Green
</form>

<button type="button" onclick="check()">Check "Red"</button>
<button type="button" onclick="uncheck()">Uncheck "Red"</button>

</body>
</html>

Try it yourself »


Radio Object Reference Radio Object

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