Issue with Regex

[Praveen Mariapp]

I am trying to do a regex validation in On change catalog client script to check that the start and end of a text variable value is either letters or numbers ONLY. No special characters allowed.

Below is the code I am using:

function onChange(control, oldValue, newValue, isLoading) {
if (isLoading || newValue == "") {
return;
}

var field = "sample_text"; //sample_text is the name of the variable I created in the catalog item
var regex = /^[A-Za-z0-9]+ [A-Za-z0-9]+$/;

if (regex.test(g_form.getValue(field))) {
g_form.showFieldMsg(field, "Valid", "info");
} else {
g_form.showFieldMsg(field, "Invalid", "error");
}
}

It always says 'Invalid' even if I enter appropriate text (e.g., test) in to the field. Any help would be greatly appreciated.

[Abhijit4]

Use below regex pattern instead:

/^[A-Za-z0-9]*$/

Updated script :

function onChange(control, oldValue, newValue, isLoading) {
if (isLoading || newValue == "") {
return;
}

var field = "sample_text"; //sample_text is the name of the variable I created in the catalog item
var regex = /^[A-Za-z0-9]*$/;

if (regex.test(g_form.getValue(field))) {
g_form.showFieldMsg(field, "Valid", "info");
} else {
g_form.showFieldMsg(field, "Invalid", "error");
}
}

Please mark answer as Correct or Helpful based on impact.

[Praveen Mariapp]

Hi Abhijit,

Thanks for the response. May be, I have to mention the complete requirement to make it straight forward:

Can contain letters or numbers and not case-sensitive

No special characters are allowed except hyphen

Should not start or end with a hyphen

Can not have multiple consecutive hyphens

Achieving all of this in a single Regex was beyond my knowledge at the moment. So, I was trying to split and achieve with multiple statements. Anyway, above is the complete requirement.

[Abhijit4 · Accepted solution]

Made below regex for your requirement, tested and covers all your conditions:

/^[A-Za-z0-9]+(-[A-Za-z0-9]+)*$/

Please mark answer as Correct or Helpful based on impact.

[Praveen Mariapp]

works like a charm, many thanks Abhijit