Friday, 30 December 2016

javascript - regex to validate emails which allows only these two special symbols .,- before @ symbol




I have used below regex for email validation.




var reg = /^(([^<>()[\]\\.,;:\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,}))$/;


How can i validate the below two email id like




  1. hello!%#%^world@gmail.com

  2. helloworld@-gmail.com




Vaild Email ids:




  1. hello-world@gmail.com

  2. hello.world@gmail.com



InVaild Email ids:





  1. hello!#%#@gmail.com

  2. helloworld@-gmail.com



Special characters should not be allow before @gmail.com



Below is my JavaScript code



var re = /^(([^<>()[\]\\.,;:\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,}))$/;


if (!re.test($(this).val())) {
errmsg.push($(this).attr('placeholder') + ' is invalid');
}

Answer



You could try the below regex to validate emails which allows only these two special symbols .,- before @ symbol.



^[^<>()[\]\\,;:\%#^\s@\"$&!@]+@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z0-9]+\.)+[a-zA-Z]{2,}))$



DEMO


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