让IE8浏览器支持function.bind()方法

2019-11-20 14:01:35

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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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