This is my expression:
^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])[[:graph:]]{6,25}$
I have tested it on http://regex101.com/
Its working for string DeepakManwal1 when there is php selected but does not work when javascript is selected. I don't know what is the exact reason.
I want to use this expression for password validation where there should be at-least one uppercase letter and one numeric character.
Here is fiddle http://jsfiddle.net/j7rmj44h/
It is because of the POSIX class [:graph:] — you could change it to the equivalent [\x21-\x7E]. Also, you need to remove the quotations around your pattern according to your fiddle.
var re = /^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])[\x21-\x7E]{6,25}$/
AFAIK, javascript doesn't understand POSIX.
Have a try with:
^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])\S{6,25}$
Different regex engines have different capabilities. Only the simplest of regex can be shared across implementations.
If I recall correctly [:graph:] like specification of character classes is not supported in JS.
