I'm a webdeveloper noob an I've been googling all around the web and I can't believe i can't find an answer that actually works. I need the minimun value of an input to be 1000 or minimum length 4 chars, doesn't really matter witch one. So if the input is 1000 or more, or blank it should be true, if under 1000 it should pop up an alert.
Anyone can help? This shouldn't be too hard? Thanks in advance!