browser-simple-loader

browser-simple-loader - it's a simple html5 (based on svg) loader in browser.

Install

npm install browser-simple-loader --save

Use (recommended)

Create your es6 file:

// my-file.js

'use strict';

import Loader from 'browser-simple-loader';

class Test {
    constructor() {
        let loader = new Loader();

        loader.show();
    }
}

export default new Test();

and then build it with webpack.

Add to html page you generated script and open your page:

<script src='my-bundle.js'></script>

You will see a Loader.

Use in html (without build)

Of course you can just include on page compiled file and use it.

• download browser-simple-loader.js from /build/ folder from project page
• added script tag with browser-simple-loader.js on your page

<script src="/path-to/browser-simple-loader.js"></script>

<script>	
    var loader = new window.Loader(); // window.Loader is a global object if you choose this method.
    
    loader.show();
</script>

API

constructor()

import Loader from 'browser-simple-loader';
let loader = new Loader({...});

or just call in browser (if you choose 'Use in html (without build)')

let loader = new window.Loader({...});

default configuration is:

{            
    size: 120, // px
 
    duration: 1, // seconds
    radius: 8, // px
    colors: [
        ['#c5523f', '#f2b736'],
        ['#f2b736', '#499255'],
        ['#499255', '#1875e5'],
        ['#1875e5', '#c5523f'],
    ],
 
    templates: {
        style: null, // <style>....</style>
        loader: null // <svg>....</svg>
    },
 
    container: document.getElementsByTagName('body')[0], // DOM element
 
    className: 'browser-simple-loader' // String
}

Default templates is:

templates.style

<style type="text/css">
    .browser-simple-loader {
        background: rgba(255, 255, 255, 0.5);
        bottom: 0;
        left: 0;
        position: fixed;
        right: 0;
        top: 0;
        z-index: 1000;
        display: none;
    }

    .browser-simple-loader svg {
        position: fixed;
        left: 50%;
        top: 50%;
        z-index: 1001;
        margin: -${size / 2}px 0 0 -${size / 2}px;
    }
</style>

templates.loader

<svg width="${size}px" height="${size}px" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid">
    <rect x="0" y="0" width="100" height="100" fill="none"></rect>
    <g transform="rotate(0 50 50)">
        <circle r="${radius}" cx="20" cy="50" transform="translate(23.4991 -23.4991)">
            <animateTransform attributeName="transform" type="translate" begin="0s" repeatCount="indefinite" dur="${duration}s" values="0 0;30 -30" keyTimes="0;1"></animateTransform>
            <animate attributeName="fill" dur="${duration}s" begin="0s" repeatCount="indefinite" keyTimes="0;1" values="${colors[0][0]};${colors[0][1]}"></animate>
        </circle>
    </g>
    <g transform="rotate(90 50 50)">
        <circle r="${radius}" cx="20" cy="50" transform="translate(23.4991 -23.4991)">
            <animateTransform attributeName="transform" type="translate" begin="0s" repeatCount="indefinite" dur="${duration}s" values="0 0;30 -30" keyTimes="0;1"></animateTransform>
            <animate attributeName="fill" dur="${duration}s" begin="0s" repeatCount="indefinite" keyTimes="0;1" values="${colors[1][0]};${colors[1][1]}"></animate>
        </circle>
    </g>
    <g transform="rotate(180 50 50)">
        <circle r="${radius}" cx="20" cy="50" transform="translate(23.4991 -23.4991)">
            <animateTransform attributeName="transform" type="translate" begin="0s" repeatCount="indefinite" dur="${duration}s" values="0 0;30 -30" keyTimes="0;1"></animateTransform>
            <animate attributeName="fill" dur="${duration}s" begin="0s" repeatCount="indefinite" keyTimes="0;1" values="${colors[2][0]};${colors[2][1]}"></animate>
        </circle>
    </g>
    <g transform="rotate(270 50 50)">
        <circle r="${radius}" cx="20" cy="50" transform="translate(23.4991 -23.4991)">
            <animateTransform attributeName="transform" type="translate" begin="0s" repeatCount="indefinite" dur="${duration}s" values="0 0;30 -30" keyTimes="0;1"></animateTransform>
            <animate attributeName="fill" dur="${duration}s" begin="0s" repeatCount="indefinite" keyTimes="0;1" values="${colors[3][0]};${colors[3][1]}"></animate>
        </circle>
    </g>
</svg>

Create loader with own config:

let loader = new Loader({
    size: 400,
    duration: 0.8,
    radius: 10,
    container: document.getElementById('my-loader-container')
});

loader.show();

show()

Method to show Loader.

loader.show();

hide()

Method to hide Loader.

loader.hide();

static getInstance()

Static method to get instance of Loader.

import Loader from 'browser-simple-loader';

...
let loader = new Loader({...});
...

Loader.getInstance(); // return result of the first new Loader();