Javascript Reference - HTML DOM Input Radio value Property

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

Browser Support


`value`	Yes	Yes	Yes	Yes	Yes

Syntax

Return the value property.

var v = radioObject.value

Set the value property.

radioObject.value=text

Property Values

Value	Description
text	Set the value associated with the input radio button

Return Value

A String type value representing the value attribute of the radio button.

Example

The following code shows how to change the value attribute of a radio button.


<!DOCTYPE html>
<html>
<body>
<input type="radio" name="colors" value="red" id="myRadio">old name
<button onclick="display()">Display name</button>
<button onclick="change()">Change name</button>
<!--from  w  ww  .j a v a 2  s  . c  om-->
<script>
function display() {
    var x = document.getElementById("myRadio").value;
    console.log("The value is: " + x);
}

function change() {
    var x = document.getElementById("myRadio").value = "newRadioBtnValue";
    console.log("The value was changed to: " + x);
}
</script>

</body>
</html>

The code above is rendered as follows:

Example 2

The following code shows how to display the value of the selected radio button.


<!DOCTYPE html>
<html>
<body>
<p>Select your favorite browser.</p>
<form action="url">
  <input type="radio" name="browser" onclick="myFunction(this.value)" value="Internet Explorer">Internet Explorer<br>
  <input type="radio" name="browser" onclick="myFunction(this.value)" value="Firefox">Firefox<br>
  <input type="radio" name="browser" onclick="myFunction(this.value)" value="Opera">Opera<br>
  <input type="radio" name="browser" onclick="myFunction(this.value)" value="Google Chrome">Google Chrome<br>
  <input type="radio" name="browser" onclick="myFunction(this.value)" value="Safari">Safari<br><br>
<!--   w w  w  .  j  av  a 2 s.  com-->
  Your favorite browser is: <input type="text" id="result">
  <input type="submit" value="Submit form">
</form>

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

The code above is rendered as follows:

Example 3

The following code shows how to get the value of a radio button.


<!DOCTYPE html>
<html>
<body>
<input type="radio" name="colors" value="red" id="myRadio">Red
<button onclick="myFunction()">test</button>
<p id="demo"></p>
<script>
function myFunction() {<!-- ww  w .  j a  va2s. co  m-->
    var x = document.getElementById("myRadio").value;
    document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The code above is rendered as follows: