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让IE8浏览器支持function.bind()方法

  作者：bea

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 b

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>


主要解决“百度地图”官网上的例子的bug，摘取如下代码：




<!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:"微软雅黑";} 

#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>给多个点添加信息窗口</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>点击标注点，可查看由纯文本构成的简单型信息窗口</p> 

</body> 

</html> 

<script type="text/javascript"> 

// 百度地图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：北京市东城区王府井大街88号乐天银泰百货八层"], 

[116.406605,39.921585,"地址：北京市东城区东华门大街"], 

[116.412222,39.912345,"地址：北京市东城区正义路甲5号"] 

]; 

var opts = { 

width : 250, // 信息窗口宽度 

height: 80, // 信息窗口高度 

title : "信息窗口" , // 信息窗口标题 

enableMessage:true//设置允许信息窗发送短息 

}; 

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])); // 创建标注 

var content = data_info[i][2]; 

map.addOverlay(marker); // 将标注添加到地图中 

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); // 创建信息窗口对象 

map.openInfoWindow(infoWindow,point); //开启信息窗口 

} 

</script>




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