JavaScript – compare two dates, validate date range
function validateDateRange(date1Id, date2tId, errMsg){
date1 = document.getElementById(date1Id).value;
date2 = document.getElementById(date2Id).value;
//alert(date1 + ‘<>’ + date2);
if(date1 != null && date2 != null){
if (Date.parse(date1) > Date.parse(date2)) {
document.getElementById(date2Id).value = date1;
alert(errMsg);
return false;
}
}
return true;
}
