nanobar.min.js

(function(root){"use strict";var css=".nanobar{width:100%;height:4px;z-index:9999;top:0}.bar{width:0;height:100%;transition:height .3s;background:#000}";function addCss(){var s=document.getElementById("nanobarcss");if(s===null){s=document.createElement("style");s.type="text/css";s.id="nanobarcss";document.head.insertBefore(s,document.head.firstChild);if(!s.styleSheet)return s.appendChild(document.createTextNode(css));s.styleSheet.cssText=css}}function addClass(el,cls){if(el.classList)el.classList.add(cls);else el.className+=" "+cls}function createBar(rm){var el=document.createElement("div"),width=0,here=0,on=0,bar={el:el,go:go};addClass(el,"bar");function move(){var dist=width-here;if(dist<.1&&dist>-.1){place(here);on=0;if(width>=100){el.style.height=0;setTimeout(function(){rm(el)},300)}}else{place(width-dist/4);setTimeout(go,16)}}function place(num){width=num;el.style.width=width+"%"}function go(num){if(num>=0){here=num;if(!on){on=1;move()}}else if(on){move()}}return bar}function Nanobar(opts){opts=opts||{};var el=document.createElement("div"),applyGo,nanobar={el:el,go:function(p){applyGo(p);if(p>=100){init()}}};function rm(child){el.removeChild(child)}function init(){var bar=createBar(rm);el.appendChild(bar.el);applyGo=bar.go}addCss();addClass(el,"nanobar");if(opts.id)el.id=opts.id;if(opts.classname)addClass(el,opts.classname);if(opts.target){el.style.position="relative";opts.target.insertBefore(el,opts.target.firstChild)}else{el.style.position="fixed";document.getElementsByTagName("body")[0].appendChild(el)}init();return nanobar}if(typeof exports==="object"){module.exports=Nanobar}else if(typeof define==="function"&&define.amd){define([],function(){return Nanobar})}else{root.Nanobar=Nanobar}})(this);