input day month year validator html and javascript code example
Example 1: javascript validate date
var date_regex = /^(0[1-9]|1[0-2])\/(0[1-9]|1\d|2\d|3[01])\/(19|20)\d{2}$/;
if (!(date_regex.test(testDate))) {
return false;
}
Example 2: how to validate input type=date in javascript
function isValidDate(d){
return !isNaN((new Date(d)).getTime());
}