iview/src/components/loading-bar/loading-bar.js

import LoadingBar from './loading-bar.vue';
import Vue from 'vue';

LoadingBar.newInstance = properties => {
    const _props = properties || {};

    const Instance = new Vue({
        data: _props,
        render (h) {
            return h(LoadingBar, {
                props: _props
            });
        }
    });

    const component = Instance.$mount();
    document.body.appendChild(component.$el);
    const loading_bar = Instance.$children[0];

    return {
        update (options) {
            if ('percent' in options) {
                loading_bar.percent = options.percent;
            }
            if (options.status) {
                loading_bar.status = options.status;
            }
            if ('show' in options) {
                loading_bar.show = options.show;
            }
        },
        component: loading_bar,
        destroy () {
            setTimeout(function() {
                document.body.removeChild(document.getElementsByClassName('ivu-loading-bar')[0].parentElement);
            }, 500);
        }
    };
};

export default LoadingBar;