讓IE8瀏覽器支持function.bind()方法

更新時(shí)間：2014年10月16日 17:21:15 投稿：whsnow

function.bind()方法默認(rèn)IE8是不支持的，下面有個(gè)小技巧可完美解決這個(gè)問(wèn)題，為此疑惑的朋友可以看看

IE8支持function.bind()方法

<script type="text/javascript"> 
if (!Function.prototype.bind) { 
Function.prototype.bind = function (oThis) { 
if (typeof this !== "function") { 
throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable"); 
} 
var aArgs = Array.prototype.slice.call(arguments, 1), 
fToBind = this, 
fNOP = function () {}, 
fBound = function () { 
return fToBind.apply(this instanceof fNOP && oThis 
? this 
: oThis, 
aArgs.concat(Array.prototype.slice.call(arguments))); 
}; 
fNOP.prototype = this.prototype; 
fBound.prototype = new fNOP(); 
return fBound; 
}; 
} 
</script>

主要解決“百度地圖”官網(wǎng)上的例子的bug，摘取如下代碼：

<!DOCTYPE html> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> 
<style type="text/css"> 
body, html {width: 100%;height: 100%;margin:0;font-family:"微軟雅黑";} 
#allmap{width:100%;height:500px;} 
p{margin-left:5px; font-size:14px;} 
</style> 
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=39b92e64ae5622663ceceaccd8ab8eb1"></script> 
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script> 
<title>給多個(gè)點(diǎn)添加信息窗口</title> 
<script type="text/javascript"> 
if (!Function.prototype.bind) { 
Function.prototype.bind = function (oThis) { 
if (typeof this !== "function") { 
throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable"); 
} 
var aArgs = Array.prototype.slice.call(arguments, 1), 
fToBind = this, 
fNOP = function () {}, 
fBound = function () { 
return fToBind.apply(this instanceof fNOP && oThis 
? this 
: oThis, 
aArgs.concat(Array.prototype.slice.call(arguments))); 
}; 
fNOP.prototype = this.prototype; 
fBound.prototype = new fNOP(); 
return fBound; 
}; 
} 
</script> 
</head> 
<body> 
<div id="allmap"></div> 
<p>點(diǎn)擊標(biāo)注點(diǎn)，可查看由純文本構(gòu)成的簡(jiǎn)單型信息窗口</p> 
</body> 
</html> 
<script type="text/javascript"> 
// 百度地圖API功能 
map = new BMap.Map("allmap"); 
map.centerAndZoom(new BMap.Point(116.417854,39.921988), 15); 
var data_info = [[116.417854,39.921988,"地址：北京市東城區(qū)王府井大街88號(hào)樂(lè)天銀泰百貨八層"], 
[116.406605,39.921585,"地址：北京市東城區(qū)東華門(mén)大街"], 
[116.412222,39.912345,"地址：北京市東城區(qū)正義路甲5號(hào)"] 
]; 
var opts = { 
width : 250, // 信息窗口寬度 
height: 80, // 信息窗口高度 
title : "信息窗口" , // 信息窗口標(biāo)題 
enableMessage:true//設(shè)置允許信息窗發(fā)送短息 
}; 
for(var i=0;i<data_info.length;i++){ 
var marker = new BMap.Marker(new BMap.Point(data_info[i][0],data_info[i][1])); // 創(chuàng)建標(biāo)注 
var content = data_info[i][2]; 
map.addOverlay(marker); // 將標(biāo)注添加到地圖中 
marker.addEventListener("click",openInfo.bind(null,content)); 
} 
function openInfo(content,e){ 
var p = e.target; 
var point = new BMap.Point(p.getPosition().lng, p.getPosition().lat); 
var infoWindow = new BMap.InfoWindow(content,opts); // 創(chuàng)建信息窗口對(duì)象 
map.openInfoWindow(infoWindow,point); //開(kāi)啟信息窗口 
} 
</script>

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