function.bind() 方法默认 IE8 是不支持的,下面有个小技巧可完美解决这个问题,为此疑惑的朋友可以看看
Javascript 是一种由 Netscape 的 LiveScript 发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言,主要目的是为了解决服务器端语言,比如 Perl,遗留的速度问题,为客户提供更流畅的浏览效果。
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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