Pankaj Mishra

Hi,
Most of the time we require to validate the control in the client side using javascript.Below are some useful function


For removing blank spaces with regular Expression-----------------------

function trimAll(value)
{
var temp = value;
var obj = /^(\s*)([\W\w]*)(\b\s*$)/;
if (obj.test(temp))
{
temp = temp.replace(obj, '$2');
}
var obj = / +/g;
temp = temp.replace(obj, " ");
if (temp == " ")
{
temp = "";
}
return temp;
}

For Zip code validation US Zip Code------------------------------------------

function isValidZipCode(val)
{
var exp=/(^\d{5}$)(^\d{5}-\d{4}$)/;
var re = new RegExp(exp);
return (val.match(re));
}

For checking Alphanumeric value-----------------------------------
function CheckAlphanumeric (e)
{
var key;
key = e.which ? e.which : e.keyCode;
if((key>=48 &&amp;amp; key<=57)(key>=65 && key<=91) (key >=97 && key<=123)) {
e.returnValue= true;
}
else
{
alert("please enter Alphanumeric only");
e.returnValue = false;
}
}
Time in 12 hour foramt-----------------------------------------------

function validateTime(strValue,state)
{
var objRegExp = /^([1-9]1[0-1]):[0-5]\d(:[0-5]\d(\.\d{1,3})?)?$/;
if(!(objRegExp.test( strValue )))
{
alert("Please Enter "+ state +" time in 12 hour format eg 11:30 ");
}
return objRegExp.test( strValue );
}

Hope this will help all
Regards
Pankaj

Labels: Javascript