https://nclp.mn/web/assets/loader/js/pathLoader.js

1/**
2 * pathLoader.js v1.0.0
3 * http://www.codrops.com
4 *
5 * Licensed under the MIT license.
6 * http://www.opensource.org/licenses/mit-license.php
7 * 
8 * Copyright 2014, Codrops
9 * http://www.codrops.com
10 */
11;( function( window ) {
12	
13	'use strict';
14
15	function PathLoader( el ) {
16		this.el = el;
17		// clear stroke
18		this.el.style.strokeDasharray = this.el.style.strokeDashoffset = this.el.getTotalLength();
19	}
20
21	PathLoader.prototype._draw = function( val ) {
22		this.el.style.strokeDashoffset = this.el.getTotalLength() * ( 1 - val );
23	}
24
25	PathLoader.prototype.setProgress = function( val, callback ) {
26		this._draw(val);
27		if( callback && typeof callback === 'function' ) {
28			// give it a time (ideally the same like the transition time) so that the last progress increment animation is still visible.
29			setTimeout( callback, 200 );
30		}
31	}
32
33	PathLoader.prototype.setProgressFn = function( fn ) {
34		if( typeof fn === 'function' ) { fn( this ); }
35	}
36
37	// add to global namespace
38	window.PathLoader = PathLoader;
39
40})( window );