Display last four of a string of numbers.

Question

Hello,Is there a script to display only the last 4 of a string of numbers where the full number of numerical characters can very?Either display as "xxxx2298" or "2298". Or any other method.Thanks,Ed

try67 · Accepted Answer

I generally do copy from another (to be hidden) field. Where the hidden field name will be "MEM_NMBR".

In that case you can use this code as the field's custom calculation script:

event.value = this.getField("MEM_NMBR").valueAsString.substr(-4);

gkaiseril · Answer

Do you want to display only the last 4 with or without redacted leading positions/

You can have the form retain the full value of a field but only have that field display the last 4 digits. This is not the most secure approach since it is possible to still get to the full value of the field through JavaScript or some of the form tools.

The custom format script could be:

if(event.value != "" && event.value.length > 4)

{

event.value = "*".repeat(event.value.length - 4) + event.value.substr(event.value.length - 4);

}

You may need to create a custom keystroke script to limit the input to numbers only. The following script will limit keystrokes to numbers:

if(event.willCommit == false)
{
event.rc = /^\d*$/.test(event.change);
}

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