How to validate email id in alphanumeric

Question

I am trying to validate email to access alphanumeric characters

<script type = "text/javascript">
function checkField(email)
{
if (/[^0-9a-bA-B\s]/gi.test(email.value))
{
alert ("Only alphanumeric characters and spaces are valid in 
this field");
email.value = "";
email.focus();
return false;
}
}
</script>

it must contain alphabets and numerics ex:"test123@gmail.com","admin890@gmail.com" , "abc456@gmail.com" .. how can rewrite this code.??

regular_exp = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/; To validate email use this regular exp — Pardeep Poria, May 05 '16 at 11:05

Pardeep Poria · Accepted Answer · 2016-05-05T14:34:12.057

0

I am matching two reg exp as i am not sure how to combine them but it works only for alphanumeric

<form method="post" name="client_form" id="client_form"> <input name="email" id="email" type="text" value="" class="formq" tabindex="1" style="width:200px" autocomplete="off" onblur="checkField(this.value)"/>
</form>
<script>
function checkField(email){ 
console.log(email);
      var reg_exp = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
      var chk = reg_exp.test(email);
      var checkalphanumeric = email.split("@");
      var alphanumeric_chk = /^(\d+[a-z]|[a-z]+\d)[a-z\d]*$/i;
      var check2 = alphanumeric_chk.test(checkalphanumeric[0]);
      console.log(check2);
      if(chk && check2){
          alert("valid");
      } else { 
          alert("Only alphanumeric characters and spaces are valid in this field"); 
      }
}
</script>

Here is what happens on 123@gmail.com

edited May 05 '16 at 14:34

answered May 05 '16 at 11:12

Pardeep Poria

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its not working..allways showing this alert – Twinxz May 05 '16 at 11:40
try using console.log(email); inside the function start to see what exactly you are sending to the function. Also can you show me your full validation code ? – Pardeep Poria May 05 '16 at 11:53
– Twinxz May 05 '16 at 12:04
http://jsfiddle.net/Ra85j/141/ here is fiddle for you – Pardeep Poria May 05 '16 at 12:12
check my edited answer – Pardeep Poria May 05 '16 at 12:22
it works .,but i want result valid when the value is alphanumeric only ex:"abc123@gmail.com"..don't work in alphabets(123@gmail.com) or numerics(abc@gmail.com) – Twinxz May 05 '16 at 12:27
check again...now it matches only alphanumeric.. – Pardeep Poria May 05 '16 at 12:41
sry..its again working in alphabets and numerics separately .i need it combined result here is the example::abc1234@gmail.com – Twinxz May 05 '16 at 12:46
no it doesn't work in alphabets and numerics separately .. working only for alphanumerics fds3242@gmail.com, d3sd3@gmail.com etc – Pardeep Poria May 05 '16 at 12:56
can u check 123@gmail.com – Twinxz May 05 '16 at 13:07
I have added the screenshot too – Pardeep Poria May 05 '16 at 13:10
me too ..but the result is valid..pls check – Twinxz May 05 '16 at 13:21
lol how is it happening :D send me your fiddle link – Pardeep Poria May 05 '16 at 13:23
http://jsfiddle.net/Ra85j/141/ – Twinxz May 05 '16 at 13:27
http://jsfiddle.net/Ra85j/142/ check now and mark my answer as accepted .. thanks Also even if you just create new html file and copy my answer to that and try running that it would have been done already because my answer too is working. – Pardeep Poria May 05 '16 at 13:29
ya its working ...but result have some problm.if "abc1@gmail.com","123a@gmail.com"shows wrong but actually its true..and " abc12@gmail.com","123as@gmail.com" its working properly. – Twinxz May 05 '16 at 13:39
after numeric or alphabets single word or letter shows wrong ex:"abcd5@gmail.com","1234a@gmail.com".,and other all conditions working correctly. – Twinxz May 05 '16 at 13:42
Please help youself thank you ! – Pardeep Poria May 05 '16 at 13:42
realy thank you for helping me.. – Twinxz May 05 '16 at 13:48
http://jsfiddle.net/Ra85j/164/ try this :) I also edited my answer .... alphanumeric_chk updated to alphanumeric_chk = /^(\d+[a-z]|[a-z]+\d)[a-z\d]*$/i; – Pardeep Poria May 05 '16 at 14:33
thank you its working..and this is what i want.. – Twinxz May 06 '16 at 05:34
I am glad it helped ! – Pardeep Poria May 06 '16 at 06:04

How to validate email id in alphanumeric

1 Answers1