How can I trim the leading zeros off of the value in PID-3

Question

Some clinics pad the patient id with leading zeros and in some cases these leading zeros need to be trimmed off.

Answer 1

Use a regular expression like this:

var pid3 = source.getNode('PID-3');

pid3 = pid3.replaceFirst("^0+(?!$)", ""); // remove leading 0's from pid3

This answer was inspired by stackOverFlow.com.