Solved

Javascript or jQuery - Check field contains numbers AND letters

Posted on 2009-07-06
3
547 Views
Last Modified: 2012-05-07
Hi. I need to check the value entered in a password field contains both letters and numbers.
If the user enters just letters, it needs to throw up an error.
If its just numbers, again, an error.
So some examples:

Password: 43242  = ERROR
Password: deef = ERROR
Password: deef2 = CORRECT

I need the code to be as simple as possible, I dont want to use a pre-defined validation script. Something like..

$("#password").blur(function () {
      var b = document.getElementById("#password").value;
      if(b = NUMBERANDLETTER) {
            alert("Password is valid");
                  }
            else {
                  alert("You need to enter numbers and letters");
            }
});

OBVIOUSLY this code is incorrect, but I need it to be as simple as possible.

Need asap!

Thanks!
0
Comment
Question by:callum1002
3 Comments
 
LVL 9

Accepted Solution

by:
Shahzad Fateh Ali earned 300 total points
ID: 24784524
Try this

$("#password").blur(function () {
      var b = document.getElementById("#password").value;
      var pp = /(([a-z][A-Z])+[0-9]+)+/i
      if(pp.test(b)) {
            alert("Password is valid");
                  }
            else {
                  alert("You need to enter numbers and letters");
            }
});

Open in new window

0
 
LVL 75

Assisted Solution

by:Michel Plungjan
Michel Plungjan earned 200 total points
ID: 24784658
try

http://nilangshah.wordpress.com/2007/06/26/password-validation-via-regular-expression/

var reg = ^\w*(?=\w*\d)(?=\w*[a-z])(?=\w*[A-Z])\w*$
.
.
 
   if(reg.test(b)) {
            alert("Password is valid");
                  }
            else {
                  alert("You need to enter numbers and letters");
            }

Open in new window

0
 

Author Closing Comment

by:callum1002
ID: 31600115
Thanks, it worked however the getElementById("#password") should have been getElementById("password") i belive. Got it working anyway, thanks! :)
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Knockoutjs (Knockout) is a JavaScript framework (Model View ViewModel or MVVM framework).   The main ideology behind Knockout is to control from JavaScript how a page looks whilst creating an engaging user experience in the least …
Introduction JSON is an acronym for JavaScript Object Notation.  It is a text-string data transport mechanism, capable of representing simple or complex data structures in a consistent and easy-to-read manner.  Similar in concept to XML, but more e…
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question