1 Reply Latest reply on Sep 24, 2010 10:32 AM by George_Johnson

    Limiting a Text Box to certain Charachters


      I would like to run a custom validation script for a text box. I need the text box to only allow letters a-z, numbers 0-9, and the - charachter.


      If someone enters any other charachter, such as a / or &, I would like an error message to appear once the click off the text box saying that this text box only allows characters a-z, 0-9 and -.

        • 1. Re: Limiting a Text Box to certain Charachters
          George_Johnson MVP & Adobe Community Professional

          You can use the following as a custom Validate script for a text field:


          (function () {


              // define regular expression
              var re = /[^a-z0-9\-]/;


              if (re.test(event.value)) {


                  app.alert("Your message goes here.");


                 // Optionally, reject value
                 event.rc = false;




          I often find it better to simply reject invalid characters using a Keystroke script and not bother with annoying pop-ups messages.