Solved

require value to contain at least one letter and number

Posted on 2011-02-25
2
690 Views
Last Modified: 2012-05-11
Hi all,

I am using this function to check that a string contains at least one letter and number but for some reason it doesnt work. Is the regex string invalid? I only want to allow letters and numbers. and the password must contain at least one letter and number.

so this would fail val = "1234567"

this would fail val = "abcdefg"

this would pass val = "234ftgh"

this would pass val = "abcgf2"



  // alphanumeric
  function alphacheck(){
    var val = document.getElementById("pass").value;
    if(!val.match(/^([a-z]+[0-9]+[a-z0-9]*)|([0-9]+[a-z]+[a-z0-9]*)$/i)){
      alert("Password has to have at least one number and one letter character.");
      return false;
    }
    return true;
  }

Open in new window

0
Comment
Question by:binovpd
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 82

Accepted Solution

by:
leakim971 earned 50 total points
ID: 34979650
For example :
function alphacheck(){
    var val = document.getElementById("pass").value;
    if(!/\d+[A-Za-z]+|[A-Za-z]+\d+/.test(val)){
      alert("Password has to have at least one number and one letter character.");
      return false;
    }
    return true;
  }

Open in new window

0
 

Author Closing Comment

by:binovpd
ID: 34980943
that did it thanks
0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
close pop up windows when logout or main window closes 17 86
javascript duplicates 9 26
Ajax success not firing alert 6 45
Check for Numeric Phone Field 14 48
This article demonstrates how to create a simple responsive confirmation dialog with Ok and Cancel buttons using HTML, CSS, jQuery and Promises
Today, the web development industry is booming, and many people consider it to be their vocation. The question you may be asking yourself is – how do I become a web developer?
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…

752 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