Question

I have one web application, in this i have to validate one date field of format like mm/dd/yyyy. I searched in the net but i didn’t get the proper one. Please help me by providing the new function or by correcting on my code. My code is shown below.. I had called this JS function at onblur event..

function isValidDate() {

var re = new RegExp('^(0[1-9]|[12][0-9]|3[01])/(0[1-9]|1[012])/(19|20)dd$');

if (form1.txtDateOfOccurance.value != '' && !form1.txtDateOfOccurance.value.match(re)) {
    alert("Invalid date format: " + form1.txtDateOfOccurance.value);
    form1.txtDateOfOccurance.value = "";
    form1.txtDateOfOccurance.focus();
    isEnable();
    return false;
}

}

Thanks in advance..

Answer 1

I’d just try parsing the string as a Date object and check the result (assuming you only need to know if it’s a valid date or not):

var myDate = Date.parse(form1.txtDateOfOccurance.value);
if(isNaN(myDate)){ 
    // it's not a real date
}