JavaScript is not working.

I am adding international country dial code in front of a input box of phone no using below code.

$( document ).ready(function() {        
    var input = document.querySelector("#phone1");      
    window.intlTelInput(input, {
        utilsScript: "https://cdnjs.cloudflare.com/ajax/libs/intl-tel-input/17.0.8/js/utils.js",
        initialCountry: "gb", 
        separateDialCode: true,
    });
});

This code is working perfectly when I am browsing normally. I have a submit button in this page. After submitting form this page is redirect to next page. I have a back button in next page. Below code is working when I page back button in next page.

$(document).on("click", ".locationBack", function () {
    var property_id = $('.property_id').val()
    getPropertyInformation(property_id)
    stepActiveClass(1)
});

When I press back button Dial Code code is not working.