{"id":171,"date":"2014-12-18T10:18:57","date_gmt":"2014-12-18T10:18:57","guid":{"rendered":"http:\/\/shabeebk.com\/blog\/?p=171"},"modified":"2014-12-21T11:26:27","modified_gmt":"2014-12-21T11:26:27","slug":"regular-expression-for-at-least-one-number-capital-letter-and-a-special-character","status":"publish","type":"post","link":"http:\/\/shabeebk.com\/blog\/regular-expression-for-at-least-one-number-capital-letter-and-a-special-character\/","title":{"rendered":"Regular expression for at least one number capital letter and a special character"},"content":{"rendered":"

\nHere 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.<\/p>\n

First we can write Regex as below,<\/p>\n

^(((.*\\d.*[A-Z].*[!@#$%^&amp;*? ~].*))|(.*[A-Z].*\\d.*[!@#$%^&amp;*? ~].*)|(.*[!@#$%^&amp;*? ~].*[A-Z].*\\d.*)|(.*[!@#$%^&amp;*? ~].*\\d.*[A-Z].*))$<\/pre>\nThis will check the string contain at at least one number,one capital letter and one special character,<\/p>\n
Here i am going to show examples with  Javascript function  ,<\/p>\n
We can write a function in javascript as below <\/p>\n
 function validatePassword(str)\r\n            {\r\n                \/\/ patter to match : Atleast one number ,one capital letter, one special charector\r\n                var reg = \/^(((.*\\d.*[A-Z].*[!@#$%^&amp;amp;*? ~].*))|(.*[A-Z].*\\d.*[!@#$%^&amp;amp;*? ~].*)|(.*[!@#$%^&amp;amp;*? ~].*[A-Z].*\\d.*)|(.*[!@#$%^&amp;amp;*? ~].*\\d.*[A-Z].*))$\/;\r\n                if (reg.test(str)) {\r\n                    return true;                                     \r\n                }\r\n                else {\r\n                    return false;                  \r\n                }\r\n            }<\/pre>\nand we can pass the string as function argument “str”, It will return if it matches the condition else it will return false.<\/p>\n
Let us look on the demo <\/p>\n