SHARE THIS PAGE

JS & DOM Reference

Overview

JavaScript Objects

JS Array JS Boolean JS Date JS Math JS Number JS String JS RegExp JS Global

Browser Objects

Window Navigator Screen History Location

Core DOM Objects

DOM Node DOM NodeList DOM NamedNodeMap DOM Document DOM Element DOM Attr

HTML DOM Objects

DOM Document DOM Events DOM Elements
DOM Anchor DOM Area DOM Base DOM Body DOM Button DOM Form DOM Frame/IFrame DOM Frameset DOM Image DOM Input Button DOM Input Checkbox DOM Input File DOM Input Hidden DOM Input Password DOM Input Radio DOM Input Reset DOM Input Submit DOM Input Text DOM Link DOM Meta DOM Object DOM Option DOM Select DOM Style DOM Table DOM td / th DOM tr DOM Textarea

Radio value Property

Radio Object

Definition and Usage

The value property sets or returns the value of the value attribute of the radio button.

For radio buttons, the contents of the value property do not appear in the user interface. The value property only has meaning when submitting a form. If a radio button is in checked state when the form is submitted, the name of the radio button is sent along with the value of the value property (if the radio button is not checked, no information is sent).

Tip: Define different values for radio buttons in the same group, to identify (on the server side) which one was checked.

Syntax

Set the value property:

radioObject.value="value"

Return the value property:

radioObject.value

Browser Support

The value property is supported in all major browsers.

Examples

Example 1

Display the value of the "Red" radio button:

<html>
<head>
<script>
function displayResult()
{
var x=document.getElementById("red").value;
alert(x);
}
</script>
</head>
<body>

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

<button type="button" onclick="displayResult()">Display value</button>

</body>
</html>

Try it yourself »

Example 2

Display the value of the selected radio button:

<html>
<head>
<script>
function displayResult(browser)
{
document.getElementById("result").value=browser
}
</script>
</head>
<body>

<p>Select your favorite browser:</p>
<form>
<input type="radio" name="browser" onclick="displayResult(this.value)" value="Internet Explorer">Internet Explorer<br>
<input type="radio" name="browser" onclick="displayResult(this.value)" value="Firefox">Firefox<br>
<input type="radio" name="browser" onclick="displayResult(this.value)" value="Opera">Opera<br>
<input type="radio" name="browser" onclick="displayResult(this.value)" value="Google Chrome">Google Chrome<br>
<input type="radio" name="browser" onclick="displayResult(this.value)" value="Safari">Safari<br><br>
Your favorite browser is: <input type="text" id="result">
</form>

</body>
</html>

Try it yourself »

Radio Object