font-awesome在ie8下面显示异常的bug

/**
* 2016.7.5
* 为了解决awesome在ie8下面显示异常
* 原理是通过轮询等待css加载完成后触发回调函数
* ex:↓
*/
//<script type="text/javascript">
//	$(function(){
//		new myFixedClass().init({
//			cssUrl:'//libs.baidu.com/fontawesome/4.0.3/css/font-awesome.min.css',
//			fontAweSomeDom:'[class*=fa-]'
//		});
//	})
//</script>

function myFixedClass(){}
myFixedClass.prototype = {
//配置
option:{
cssUrl:'',//css路径
fontAweSomeDom:'[class*=fa-]',//字体图标选择器
lnkId:false,//id
charset:false,//编码
media:false//多媒体查询
},
//初始化函数
init : function(option){
var that = this;
this.option = $.extend(true, this.option, option);
//创建link节点
var styleNode = this.createLink(this.option.cssUrl, this.option.lnkId, this.option.charset, this.option.media);
//轮询加载样式
this.styleOnload(styleNode, function() {
//		    console.log('loaded');
//加载完成回调函数
//通过重新添加classname重载字体样式
setTimeout(function(){that.fixBefore(that.option.fontAweSomeDom)},1);
});
},
//创建link节点
createLink : function(cssURL, lnkId, charset, media){
var head = document.getElementsByTagName('head')[0],
linkTag = null;
if (!cssURL) {
return false;
}

linkTag = document.createElement('link');
//	  linkTag.setAttribute('id', (lnkId || 'dynamic-style'));
linkTag.setAttribute('rel', 'stylesheet');
linkTag.setAttribute('charset', (charset || 'utf-8'));
//	  linkTag.setAttribute('media', (media || 'all'));
linkTag.setAttribute('type', 'text/css');
linkTag.href = cssURL;
//加到head区域
head.appendChild(linkTag);
return linkTag;
},
//下面部分截取自seajs
styleOnload : function(node, callback){
var that = this;
// for IE6-9 and Opera
if (node.attachEvent) {
node.attachEvent('onload', callback);
// NOTICE:
// 1. "onload" will be fired in IE6-9 when the file is 404, but in
// this situation, Opera does nothing, so fallback to timeout.
// 2. "onerror" doesn't fire in any browsers!
}
// polling for Firefox, Chrome, Safari
else {
setTimeout(function() {
that.poll(node, callback);
}, 0); // for cache
}
},
poll : function(node, callback){
var that = this;
if (callback.isCalled) {
return;
}
var isLoaded = false;
if (/webkit/i.test(navigator.userAgent)) { //webkit
if (node['sheet']) {
isLoaded = true;
}
}
// for Firefox
else if (node['sheet']) {
try {
if (node['sheet'].cssRules) {
isLoaded = true;
}
} catch (ex) {
// NS_ERROR_DOM_SECURITY_ERR
if (ex.code === 1000) {
isLoaded = true;
}
}
}
if (isLoaded) {
// give time to render.
setTimeout(function() {
callback();
}, 1);
} else {
setTimeout(function() {
that.poll(node, callback);
}, 1);
}
},
fixBefore : function(dom){
var obj = $(dom);
if(obj.length>0){
obj.each(function(i,e){
var tmp = $(e).attr("class");
$(e).removeClass();
setTimeout(function(){
$(e).attr('class',tmp);
},1);
})
}
}
}