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I need javascript code for validate the email address

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I need javascript code for validate the email address.

Email address field cannot allowed the capital letters, special characters except '@' symbol.

But can allowed the small letters, numeric numbers.

Now i use this script for validate the email address. But it allows the cpital letters otherwise its working correctly.

*************** *************** *************** ***
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  1. function validateEmail(addr,man,db) {
  2.     if (addr == '' && man) {
  3.        if (db) alert('Email address is mandatory');
  4.        return false;
  5.     }
  6.     var invalidChars = '\/\'\\ ";:?!()[]\{\}^|';
  7.     for (i=0; i<invalidChars.length; i++) {
  8.        if (addr.indexOf(invalidChars.charAt(i),0) > -1) {
  9.           if (db) alert('Email address contains invalid characters');
  10.           return false;
  11.        }
  12.     }
  13.     for (i=0; i<addr.length; i++) {
  14.        if (addr.charCodeAt(i)>127) {
  15.           if (db) alert("Email address contains non ascii characters.");
  16.           return false;
  17.        }
  18.     }
  19.     var atPos = addr.indexOf('@',0);
  20.     if (atPos == -1) {
  21.        if (db) alert('Email address must contain an @');
  22.        return false;
  23.     }
  24.     if (atPos == 0) {
  25.        if (db) alert('Email address must not start with @');
  26.        return false;
  27.     }
  28.     if (addr.indexOf('@', atPos + 1) > - 1) {
  29.        if (db) alert('Email address must contain only one @');
  30.        return false;
  31.     }
  32.     if (addr.indexOf('.', atPos) == -1) {
  33.        if (db) alert('Email address must contain a period in the domain name');
  34.        return false;
  35.     }
  36.     if (addr.indexOf('@.',0) != -1) {
  37.        if (db) alert('period must not immediately follow @ in email address');
  38.        return false;
  39.     }
  40.     if (addr.indexOf('.@',0) != -1){
  41.        if (db) alert('period must not immediately precede @ in email address');
  42.        return false;
  43.     }
  44.     if (addr.indexOf('..',0) != -1) {
  45.        if (db) alert('two periods must not be adjacent in email address');
  46.        return false;
  47.     }
  48.     var suffix = addr.substring(addr.lastIndexOf('.')+1);
  49.     if (suffix.length != 2 && suffix != 'com' && suffix != 'net' && suffix != 'org' && suffix != 'edu' && suffix != 'int' && suffix != 'mil' && suffix != 'gov' & suffix != 'arpa' && suffix != 'biz' && suffix != 'aero' && suffix != 'name' && suffix != 'coop' && suffix != 'info' && suffix != 'pro' && suffix != 'museum') {
  50.        if (db) alert('invalid primary domain in email address');
  51.        return false;
  52.     }
  53. return true;
  54. }
*************** *************** *******
I need script for not allowed the capital letters.

Please any one can help me to rectify the email validation problem.
Apr 18 '08 #1
1 3145
5,390 Recognized Expert Moderator Expert
you may use a regExp for this:

Expand|Select|Wrap|Line Numbers
  1. var foo = 'yourValue';
  3. var val = /[A-Z]/g.test(foo);
  5. // val is now true since we have a capital 'V'
kind regards
Apr 18 '08 #2

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