PO Box Regular Expression Validation

Question

Here\'s my code, but I can\'t ever trigger the alert.

$(document).ready( function (){
    $(\"[id*=\'txtAddress1S\']\").blur(function() {
        var pattern         


        

Answer 1

Here's one that matches 'POB', 'PO Box'and 'Post Office Box'. Pattern:

\\b[PO.|Post\\sOffice]*\\s?B(ox)?.*\\d+\\b.

It's a modification of @drudge's solution.