I wish for the value of one input field to always mirror the value of another input field

There is a checkbox available for selecting the billing address to be the same as the mailing address. If the checkbox is checked, both values will remain the same, even if one of them is changed. Currently, I have successfully achieved copying the mailing address to the billing address once the box is checked. However, if the values are altered afterwards, the view does not update accordingly. Below is the code snippet that represents what has been implemented so far:

createcustomer.html:

<section class="mainbar" data-ng-controller="createcustomer as vm">
<div class="col-md-4">
                            <label for="txtMailingAddress1">Address 1:</label>
                        </div>
                        <div class="col-md-8">
                            <input type="text" id="txtMailingAddress1" name="txtMailingAddress1" value="" data-ng-model="vm.MailingAddress1" class="form-control FloatLeft" required />
                        </div>

<input type="checkbox" id="checkboxSameAddress" data-ng-model="vm.IsBillingMailing" data-ng-change="vm.copyMailingAddress()" />Check if billing address same as mailing address

<div class="form-group">
                        <div class="col-md-4">
                            <label for="txtBillingAddress1">Address 1:</label>
                        </div>
                        <div class="col-md-8">
                            <input type="text" id="txtBillingAddress1" name="txtBillingAddress1" data-ng-model="vm.BillingAddress1" class="form-control FloatLeft" required />
                        </div>
                    </div>
</section>

createcustomer.js

function copyMailingAddress() {
            if (vm.IsBillingMailing) {
                vm.BillingAddress1 = vm.MailingAddress1;
            }
            else {
                vm.BillingAddress1 = '';
            }
        }

Answer №1

Approaching this task from a different angle would be more effective. Consider incorporating Angular into your solution. Here's one approach you can take:

http://jsfiddle.net/AbcDe/

var app = angular.module('inventoryApp', []);

app.controller('InventoryCtrl', function ($scope) {
    $scope.product = {
        name: 'Widget',
        price: '$20',
        quantity: 100
    };

    $scope.updateQuantity = function(newQuantity) {
        $scope.product.quantity += newQuantity;
    };
});

Answer №2

Update: Just discovered that the question is actually about angularjs, which was not initially mentioned in the title or body of the question. Only realized this after seeing the tags below. To moderators - please feel free to delete this response if it does not fit the context of this discussion board. Thank you

----------My take on this matter-------------

Here's a simpler approach (which I may use out of sheer convenience) that also helps mitigate potential errors, at least in my view.

If the "Use same as mailing address" checkbox is selected, utilize javascript/jQuery to disable all the billing address fields.

Then, when the form is submitted, validate it like so (assuming PHP is being used):

if(isset($_POST['checkboxSameAddress'])){
    $txtBillingAddress1 = $txtMailingAddress1;
    $txtBillingAddress2 = $txtMailingAddress2;
    //and so forth
}

This method ensures that the values are indeed identical without overly relying on jQuery/Javascript manipulation.

Please note: The input checkbox must have the name attribute for this functionality to function correctly.

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