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Use of Js Mixins in Magento2

Use of Js Mixins in Magento2

Today I am going to explain that how you can use js mixins in magento 2 in this article. Suppose you have to do some task before any js script’s function run or to extend a function or to modify some data without overwrite of js so this blog will be very helpful for you.

At first you will need to create requirejs-config.js under app/code/Company/Module/view/frontend, like below:


 var config = {
    config: {
        mixins: {
            'Magento_Checkout/js/action/set-shipping-information': {
                'Company_Module/js/action/set-shipping-information-mixin': true
        } // this is how js mixin is defined
// I am extending "Magento_Checkout/js/action/set-shipping-information" this js with our custom js "Company_Module/js/action/set-shipping-information-mixin".

Now, create set-shipping-information-mixin.js file under app/code/Company/Module/view/frontend/web/js/action to extend original function. So I am just appending some data to shipping address only for example, here is the code :


 /*jshint browser:true jquery:true*/
 /*global alert*/
 ], function ($, wrapper, quote) {
     'use strict';

     return function (setShippingInformationAction) {

         return wrapper.wrap(setShippingInformationAction, function (originalAction) {
             var shippingAddress = quote.shippingAddress();

             if (shippingAddress['extension_attributes'] === undefined) {
                 shippingAddress['extension_attributes'] = {'customvar':"value1"};
             // you can write here your code according to your requirement
             return originalAction(); // it is returning the flow to original action


Now if you console quote.shippingAddress() in js then result will be as follows :

Hope this blog will help you to develop custom functionality in your module in a better way. Try this and if you have any query then just comment below 🙂

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