How to check whether a JavaScript date is valid?
To check whether a JavaScript date is valid or not, you can try to run the following code −
Example
Live Demo
<!DOCTYPE html>
<html>
<body>
<script>
var date1, date2;
date1 = new Date("2018/1/1");
if( ! isNaN ( date1.getMonth() )) {
document.write("Valid date1: "+date1);
}else{
document.write("<br>Invalid date1");
}
date2 = new Date("20181/1");
if( ! isNaN ( date2.getMonth() )) {
document.write("<br> Valid date2: "+date2);
}else{
document.write("<br>Invalid date2");
}
</script>
</body>
</html>Output
Valid date1: Mon Jan 01 2018 00:00:00 GMT+0530 (India Standard Time)
Valid date2: Mon Jan 01 20181 00:00:00 GMT+0530 (India Standard Time)
Published on 14-Feb-2018 12:34:45
