I tried updating the cart using JS and summary container is updating properly. But I want to update the quantity of the item. So basically I have added a custom button in checkout/cart page. When this button is click I add one product into the cart. Now this product is fix and the quantiity added per click is fix. Now everything is working just fine including the summary container. But I want to update the Quantity field in the form-cart container. But I don't know how to do that.

I found out that getTotalsAction contains the total that want but I don't know how to retrieve this result. I'm thinking of looping through the result to update the quantity value. How can I do this?

Note: I don't want a page refresh.

Below is my code

], function ($, getTotalsAction, cartCache, totalsProcessor, quote, customerData) {
'use strict';

 $.widget('mage.poundToCart', {
     _create: function () {          
    processAddCart: function(form) {
        formData = new FormData(form[0]);
            url: form.attr('action'),
            data: formData,
            type: 'post',
            dataType: 'json',
            cache: false,
            contentType: false,
            processData: false,
            success: function (res) {  
              var deferred = $.Deferred();
              getTotalsAction([], deferred); // <--- I want to retrieve this value
              return false;

How can I do this?

I tried this link but this does not apply in my situation as there is no validate response that I get. So I just want to refresh the cart form page like the image below

enter image description here

So basically I want to update the quantity field since adding the product is done via Ajax

  • I don't think even magento has written anything for the qty update, magento refresh the page Commented Feb 21, 2020 at 7:25

1 Answer 1


You can log the value inside this function in this way:

var deferredAction  = getTotalsAction([], deferred);

then you have : enter image description here

Now you can use for example 'success' like this :

     // you can do whatever you want here

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