How to initialize a block loader Magento 2

How to initialize a block loader Magento 2

Did you want to add loader into **templates/cart/totals.phtml**
These some ways to add loader spinner into block or page.

1 Use: <div data-bind=”blockLoader: isLoadding”> /** Block Content HTML */ </div>,

with this option you should add **isLoadding : ko.observable(false)** into your Component

Block XML Define

<block class="Magento\Framework\View\Element\Template" name="block-name"
        <argument name="jsLayout" xsi:type="array">
            <item name="components" xsi:type="array">
                <item name="scope_name" xsi:type="array">
                    <item name="component" xsi:type="string">Namespace_ModuleName/js/componentjsfile</item>


Block templates.phtml CODE

<div id="abc-def" data-bind="scope: 'scope_name'">
    <div class="product-wizard-selections" data-bind="blockLoader: isLoading">
        <div class="cart table-wrapper">
            HTML CONTENT



<script type="text/x-magento-init">
    "#abc-def": {
        "Magento_Ui/js/core/app": <?php /* @escapeNotVerified */ echo $block->getJsLayout(); ?>


**Javascript code: Namespace_ModuleName/js/componentjsfile**

], function (Component, ko){
    return Component.extend({
        defaults: {
            addToCartTitle: 'Add To Cart'
        isLoading: ko.observable(false),
        initObservable: function () {


2: With **<div class=”loader”>** using **rjsResolver**

**js file named “Namespace_ModuleName/js/abc“**

    ], function (resolver) {
        'use strict';

         * Removes provided loader element from DOM.
         * @param {HTMLElement} $loader - Loader DOM element.
        function hideLoader($loader) {
            let defaultValue = this;

         * Initializes assets loading process listener.
         * @param {Object} config - Optional configuration default data after loaded component
         * @param {HTMLElement} $loader - Loader DOM element.
        function init(config, $loader) {
            resolver(hideLoader.bind(config, $loader));

        return init;


**PHTML file**

<div id="block-loader-id" data-role="abc-loader" class="loading-mask" data-mage-init='{"Namespace_ModuleName/js/abc": {}}'>
    <div class="loader">
        <img src="<?= /* @escapeNotVerified */ $block->getViewFileUrl('images/loader-1.gif') ?>"
             alt="<?= /* @escapeNotVerified */__('Loading...') ?>" style="position: absolute;">
    ], function (url, blockLoader) {
        blockLoader("<?= /* @escapeNotVerified */ $block->getViewFileUrl('images/loader-1.gif') ?>");
        return url.setBaseUrl('<?= /* @escapeNotVerified */ $block->getBaseUrl() ?>');


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One thought on “How to initialize a block loader Magento 2

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