Radio.checked : Radio Button : Form JAVASCRIPT TUTORIALS

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Radio.checked

The checked property is a Boolean value used to determine whether a radio button is in a checked or unchecked state.



<html>
    <head>
    <title> Example of the radio checked property</title>
    </head>
    <body>
    <script language="JavaScript">
    <!--
    function checkButton(){
        if(document.form1.button1.checked == true){
            alert("Box1 is checked");
        } else if(document.form1.button2.checked == true){
            alert("Box 2 is checked");
        }
    }
    -->
    </script>
    <form name="form1">
    <input type="radio" name=button1>Box 1
    <br>
    <input type="radio" name=button2 CHECKED>Box 2
    <br>
    <INPUT type="button" value="Get Checked" onClick='checkButton()'>
    </form>
    </body>
    </html>