Vue.js component for full screen loading indicator

Vue Loading Overlay Component

:point_right: Version 2 documentation is available on v2.x branch.

Installation

# Yarn
yarn add vue-loading-overlay

# npm
npm install vue-loading-overlay

Usage

As component

<template>
    <div class="vld-parent">
        <loading :active.sync="isLoading" 
        :can-cancel="true" 
        :on-cancel="onCancel"
        :is-full-page="fullPage"></loading>

        <label><input type="checkbox" v-model="fullPage">Full page?</label>
        <button @click.prevent="doAjax">fetch Data</button>
    </div>
</template>

<script>
    // Import component
    import Loading from 'vue-loading-overlay';
    // Import stylesheet
    import 'vue-loading-overlay/dist/vue-loading.css';

    export default {
        data() {
            return {
                isLoading: false,
                fullPage: true
            }
        },
        components: {
            Loading
        },
        methods: {
            doAjax() {
                this.isLoading = true;
                // simulate AJAX
                setTimeout(() => {
                  this.isLoading = false
                },5000)
            },
            onCancel() {
              console.log('User cancelled the loader.')
            }
        }
    }
</script>

As plugin

<template>
    <form @submit.prevent="submit" class="vld-parent" ref="formContainer">
        <!-- your form inputs goes here-->
        <label><input type="checkbox" v-model="fullPage">Full page?</label>
        <button type="submit">Login</button>
    </form>
</template>

<script>
    import Vue from 'vue';
    // Import component
    import Loading from 'vue-loading-overlay';
    // Import stylesheet
    import 'vue-loading-overlay/dist/vue-loading.css';
    // Init plugin
    Vue.use(Loading);

    export default {
        data() {
            return {
                fullPage: false
            }
        },
        methods: {
            submit() {
                let loader = this.$loading.show({
                  // Optional parameters
                  container: this.fullPage ? null : this.$refs.formContainer,
                  canCancel: true,
                  onCancel: this.onCancel,
                });
                // simulate AJAX
                setTimeout(() => {
                  loader.hide()
                },5000)                 
            },
            onCancel() {
              console.log('User cancelled the loader.')
            }                      
        }
    }
</script>

Available props

The component accepts these props:

Attribute	Type	Default	Description
active	Boolean	`false`	Show loading by default when `true`, use the `.sync` modifier to make it two-way binding
can-cancel	Boolean	`false`	Allow user to cancel by pressing ESC or clicking outside
on-cancel	Function	`()=>{}`	Do something upon cancel, works in conjunction with `can-cancel`
is-full-page	Boolean	`true`	When `false`; limit loader to its container^
transition	String	`fade`	Transition name
color	String	`#000`	Customize the color of loading icon
height	Number	*	Customize the height of loading icon
width	Number	*	Customize the width of loading icon
loader	String	`spinner`	Name of icon shape you want use as loader, `spinner` or `dots` or `bars`
background-color	String	`#fff`	Customize the overlay background color
opacity	Number	`0.5`	Customize the overlay background opacity
z-index	Number	`999`	Customize the overlay z-index

^When is-full-page is set to false, the container element should be positioned as position: relative.
You can use CSS helper class vld-parent.
*The default height and width values may be vary based on the loader prop value

Available slots

The component accepts these slots:

default : Replace the animated icon with yours
before : Place anything before animated icon, you may need to style this.
after : Place anything after animated icon, you may need to style this.

API methods

`Vue.$loading.show(?propsData,?slots)`

let loader = Vue.$loading.show({
  // Pass props by their camelCased names
  container: this.$refs.loadingContainer,
  canCancel: true, // default false
  onCancel: this.yourMethodName,
  color: '#000000',
  loader: 'spinner',
  width: 64,
  height: 64,
  backgroundColor: '#ffffff',
  opacity: 0.5,
  zIndex: 999,
},{
  // Pass slots by their names
  default: this.$createElement('your-custom-loader-component-name'),
});
// hide loader whenever you want
loader.hide();

Global configs

You can set props and slots for all future instances when using as plugin

Vue.use(Loading, {
  // props
  color: 'red'
},{
  // slots
})

Further you can override any prop or slot when creating new instances

let loader = Vue.$loading.show({
 color: 'blue'
},{
  // slots
});

Install in non-module environments (without webpack)

<!-- Vue js -->
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.min.js"></script>
<!-- Lastly add this package -->
<script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue-loading.css" rel="stylesheet">
<!-- Init the plugin and component-->
<script>
Vue.use(VueLoading);
Vue.component('loading', VueLoading)
</script>

Browser support

Modern browsers only

Run examples on your localhost

Clone this repo
Make sure you have node-js >=8.9 and yarn >=1.x pre-installed
Install dependencies - yarn install
Run webpack dev server - yarn start
This should open the demo page at http://localhost:9000 in your default web browser

Testing

This package is using Jest and vue-test-utils for testing.
Tests can be found in __test__ folder.
Execute tests with this command yarn test

Download Details:

Live Demo: https://ankurk91.github.io/vue-loading-overlay/

View on GitHub: https://github.com/ankurk91/vue-loading-overlay

#vuejs #javascript #vue-js