Use a regular expression like this:
var pid3 = source.getNode('PID-3'); pid3 = pid3.replaceFirst("^0+(?!$)", ""); // remove leading 0's from pid3
var pid3 = source.getNode('PID-3');
pid3 = pid3.replaceFirst("^0+(?!$)", ""); // remove leading 0's from pid3
This answer was inspired by stackOverFlow.com.