Best Way to Validate Email in a Field in a Record Producer?

Bob · ‎09-19-2016

I am currently looking at a Record Producer I created that needs to have many different fields that are inputting different emails. There are many articles that address the issue of email validation within a field, but I wanted to not have to modify each script individually if something needed changing. I came up with a number of options.

Create Catalog Client Scripts for onLoad/onChange
- Too many fields to update and maintain. Makes me feel like less for not having a central function to rule them all.
Use oob Service Now email validation
- Using the actual Email field Type, which does check the field automagically.
  - This field type is hidden? Why?
  - Should I override and un-hide email fields type?
    - Reasons against or for?
Another is using the built in function discussed in this article Validate Email field
- Can't get the code to work below in my Catalog Client Script:
  1. function onChange(control, oldValue, newValue, isLoading) {
  2. if (isLoading || newValue == '') {
  3. return;
  4. }
  5. //Email Validation Using OOB
  6. if(oldValue != newValue){
  7. g_form.hideFieldMsg('email', true);
  8. if (!isEmailValid(newValue)) {
  9. g_form.showFieldMsg('email', newValue + " is an invalid email, please re-enter email in correct format.",'error');
  10. }
  11. }
- Am I missing something on how to properly call this function?
Create my own global Include/function

Thanks in Advance!

Jason M Fisher

University of Kentucky

ITSM Developer

xiaix · ‎09-20-2016

Well, I found some interesting stuff...

On line 9527 thru 9567:

Here's the actual code:

function isEmailValid(value) {

       var problemMsg = isEmailValidWithReason(value);

       if (problemMsg != "") {

               jslog("isEmailValid: " + problemMsg);

               return false;

       }

       return true;

}



function isEmailValidWithReason(value) {

       var localPartChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!#$%*/?|^{}`~&'+-=_.";

       var domainChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.";

       if (value.indexOf("@") == -1)

               return "missing @ sign";

       var s = value.split("@");

       if (s.length != 2)

               return "too many at signs";

       if (!containsOnlyChars(localPartChars, s[0]))

               return "invalid character before the at sign";

       if (s[0].length < 1)

               return "at least one character must be before the at sign";

       if (s[0].substr(0, 1) == ".")

               return "period cannot be the first character";

       if (s[0].substr(s[0].length - 1, 1) == ".")

               return "period cannot be the last character before the at sign";

       if (!containsOnlyChars(domainChars, s[1]))

               return "invalid character after the at sign";

       var periodIndex = s[1].indexOf(".");

       if (periodIndex == -1)

               return "missing period after the at sign";

       if (periodIndex == 0)

               return "period cannot be the first character after the at sign";

       var periods = s[1].split(".");

       var lastPeriod = periods[periods.length - 1];

       if (lastPeriod.length < 1)

               return "must be at least 1 character after the last period";

       if (!isAlphaNum(s[1].substr(0, 1)))

               return "the first character after the at sign must be alphanumeric";

       if (!isAlphaNum(s[1].substr(s[1].length - 1, 1)))

               return "the last character must be alphanumeric";

       return "";

}

Now, you can take that code and rename it and stuff it into your own Client Script or Script Include, or whatever you'd like.

Oh, they reference a function in there called containsOnlyChars() which can be found on lines 9855 thru 9864:

View solution in original post

rahul_garg · ‎09-20-2016

You can use isEmailValid(<email to validate>) function at client side to validate it.

For more details search Validation Script in navigator which has more validation scripts.

nehaagarwal · ‎09-20-2016

Hi Rahul,

How can we use those Validation Scripts?

Bob · ‎09-20-2016

I imagine the other validation scripts are similar using a simple If statement captures a true/false and returns accordingly. I got isEmailValid to work properly by fixing my Error Message. Remember g_form.hideErrorBox("field_name", "Hello World")!

Bob · ‎09-20-2016

Thanks for the reply Rahul! Problem that I found is that the client script functions don't seem to run in Record Producers? In the code that I showed above, I am trying to use isEmailValid with no success.