JavaScript Code not working to check radio button
Question
I am trying to do validation to check when a radio button is not selected, if it is not selected then a alert should be displayed, but the code below is not working. When the button is pressed thats when validation should happen
<html>
<head>
</head>
<body>
<form >
<input type="radio" id="b">
<input type="radio">
<button onClick="checkValidation()" type="button">Click Me!</button>
</form>
</body>
<script type="text/javascript">
function checkValidation(){
if (document.getElementById('b').checked == false) {
window.alert("sometext");
}
</script>
</html>
2 answers
solution1
1 2014-12-09 10:17:51
missing } :
function checkValidation(){
if (document.getElementById('b').checked == false) {
window.alert("sometext");
}
}
or remove { after the if :
function checkValidation(){
if (document.getElementById('b').checked == false)
window.alert("sometext");
}
solution2
1 2014-12-09 10:23:56
Your code contains error, a missing closing semicolon, } , it should be:
function checkValidation(){
if (document.getElementById('b').checked == false) {
window.alert("sometext");
}
} //This one is missing
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
Radio Button check in vanilla javascript is not working
Check a radio button with javascript
check radio button in javascript
JavaScript code for check the value of radio button (jQuery.val(); alternative)
JavaScript if statement for radio button check
JavaScript : switch and check radio button
Javascript check if radio button was checked?
Radio button check in JS not working?
check if a radio button is checked, not working
Javascript form validation code working on FireFox and Chrome but not on Safari (on radio button)
Related Tags