Date Format Validator
// Date Format Validator
// Sample Format : 23 Feb 1983
// (c) 2002 Premshree Pillai
// http://www.qiksearch.com
// qiksearch@rediffmail.com
function validate_date(formName, textName)
{
var errMsg="", lenErr=false, dateErr=false;
var testObj=eval('document.' + formName + '.' + textName + '.value');
var testStr=testObj.split(' ');
if(testStr.length>3 || testStr.length<3)
{
lenErr=true;
dateErr=true;
errMsg+="There is an error in the date format.";
}
var monthsArr = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug" ,"Sep", "Oct", "Nov", "Dec");
var daysArr = new Array;
for (var i=0; i<12; i++)
{
if(i!=1)
{
if((i/2)==(Math.round(i/2)))
{
if(i<=6)
{
daysArr[i]="31";
}
else
{
daysArr[i]="30";
}
}
else
{
if(i<=6)
{
daysArr[i]="30";
}
else
{
daysArr[i]="31";
}
}
}
else
{
if((testStr[2]/4)==(Math.round(testStr[2]/4)))
{
daysArr[i]="29";
}
else
{
daysArr[i]="28";
}
}
}
var monthErr=false, yearErr=false;
if(testStr[2]<1000 && !lenErr)
{
yearErr=true;
dateErr=true;
errMsg+="\nThe year \"" + testStr[2] + "\" is not correct.";
}
for(var i=0; i<12; i++)
{
if(testStr[1]==monthsArr[i])
{
var setMonth=i;
break;
}
}
if(!lenErr && (setMonth==undefined))
{
monthErr=true;
errMsg+="\nThe month \"" + testStr[1] + "\" is not correct.";
dateErr=true;
}
if(!monthErr && !yearErr && !lenErr)
{
if(testStr[0]>daysArr[setMonth])
{
errMsg+=testStr[1] + ' ' + testStr[2] + ' does not have ' + testStr[0] + ' days.';
dateErr=true;
}
}
if(!dateErr)
{
eval('document.' + formName + '.' + 'submit()');
}
else
{
alert(errMsg + '\n____________________________\n\nSample Date Format :\n23 Feb 1983');
eval('document.' + formName + '.' + textName + '.focus()');
eval('document.' + formName + '.' + textName + '.select()');
}
}
Date Format Validator
This script validates the date that the user inputs for the following sample format:
23 Feb 1983
Try it yourself !
Date Format Validator
(Click on the button to submit)
© 2002 Premshree Pillai.