Date Comparision Javascript Validation

function ValidateDate()
{
var str1 = document.getElementById(“”).value;
var str2 = document.getElementById(“”).value;

var dt1 = parseInt(str1.substring(0,2),10);
var mon1 = parseInt(str1.substring(3,5),10);
var yr1 = parseInt(str1.substring(6,10),10);
var dt2 = parseInt(str2.substring(0,2),10);
var mon2 = parseInt(str2.substring(3,5),10);
var yr2 = parseInt(str2.substring(6,10),10);
var date1 = new Date(yr1, mon1, dt1);
var date2 = new Date(yr2, mon2, dt2);

if(date2 < date1)
{
alert("To date cannot be greater than from date");
return false;
}
return true;
}

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