Regular expression for at least one number capital letter and a special character


Here we are going to write a regular exprestion for Password to check the condition like , password must contain at least one number,one capital letter and one special character.

First we can write Regex as below,

^(((.*\d.*[A-Z].*[!@#$%^&*? ~].*))|(.*[A-Z].*\d.*[!@#$%^&*? ~].*)|(.*[!@#$%^&*? ~].*[A-Z].*\d.*)|(.*[!@#$%^&*? ~].*\d.*[A-Z].*))$

This will check the string contain at at least one number,one capital letter and one special character,

Here i am going to show examples with Javascript function ,

We can write a function in javascript as below

 function validatePassword(str)
            {
                // patter to match : Atleast one number ,one capital letter, one special charector
                var reg = /^(((.*\d.*[A-Z].*[!@#$%^&*? ~].*))|(.*[A-Z].*\d.*[!@#$%^&*? ~].*)|(.*[!@#$%^&*? ~].*[A-Z].*\d.*)|(.*[!@#$%^&*? ~].*\d.*[A-Z].*))$/;
                if (reg.test(str)) {
                    return true;                                     
                }
                else {
                    return false;                  
                }
            }

and we can pass the string as function argument “str”, It will return if it matches the condition else it will return false.

Let us look on the demo

Javascript function sample

Enter password :


Let us look a jquery demo

Jquery sample

Enter password :


You can download from github

Have a noce day 😉

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3 Comments

  1. Thanks so much for the blog post.Thanks Again. Great.

  2. Thanks for the blog post.Really looking forward to read more. Really Cool.

  3. Thanks again for the article post.Thanks Again. Keep writing.

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