How to create regex to not to accept only special character or number

Question

I how to create regex to not to accept only special character or number. for eg:

it should throw error if string contain :

1. @$%^^@
2. 1231232

but should not throw error if string contain :

1. hi@
2. hi
3. hi@1
4. hi4
5. @hi

Answer 1

Simply use regex which allow alpha bates compulsory

/.*[a-z]+.*/i

Answer 2

Try this regex and let me know. It is also accept white space:

/^[ A-Za-z0-9_@./#&+-]*$/