like [a-z]

hi there,i need to write a function that alert me if the textfield value is not between [a-z] and [1-9] and other charchters like underscor "_",
i know there is a "LIKE" function in Vb,but when it comes to Jscript,i'm just a beginner,thank you for your time.

Well, I don't do anything with JScript, so I wouldn't know...

But in JavaScript...

Code:

---

if (testString.search(/\W/) != -1) {
  // String is good, contains only a-zA-Z0-9_
}
else {
  // String is bad, warn user
}

---

Ofcourse, TIAMTOW, and I haven't even tested this code.

I found a sweet script to do this somewhere. I think she's on my home machine though, so I'll send it later if I remember.
Someone post here to remind me, and I'll see the reminder when I check my email at home later...

:)