如何使用Javascript在iframe中加载谷歌地图

How to load a Google Map in an iframe with Javascript?

本文关键字：加载 谷歌地图 iframe 何使用 Javascript      更新时间：2023-09-26

我在iframe中加载谷歌地图时遇到问题。我想做这样的事，但要在一个iframe里。我尝试过不同的方式：

在加载脚本之前尝试调用showNewMap（）函数。但我得到了以下错误：未捕获的类型错误：Object[Object global]没有方法"showNewMap"：http://jsfiddle.net/9RE4h/1/

var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
var doc = iframe.contentWindow || iframe.contentDocument;
if (doc.document) { doc = doc.document;}
function showNewMap() {
    var mapContainer =  doc.createElement('div');
    mapContainer.setAttribute('style',"width: 500px; height: 300px");
    doc.body.appendChild(mapContainer);
    var mapOptions = {
        center: new google.maps.LatLng(-35.000009, -58.197645),
        zoom: 5,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    }
    var map = new google.maps.Map(mapContainer,mapOptions);
}
var script = doc.createElement('script');
script.type = 'text/javascript';
script.src = 'https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true&' + 'callback=showNewMap';
doc.getElementsByTagName('head')[0].appendChild(script);

有解决问题的办法吗？

Firefox与Google Crome兼容：

var iframe = document.createElement("iframe");
iframe.onload = function() {
   var doc = iframe.contentDocument;
   iframe.contentWindow.showNewMap = function() {
    var mapContainer =  doc.createElement('div');
    mapContainer.setAttribute('style',"width: 500px; height: 300px");
    doc.body.appendChild(mapContainer);
    var mapOptions = {
        center: new this.google.maps.LatLng(-35.000009, -58.197645),
        zoom: 5,
        mapTypeId: this.google.maps.MapTypeId.ROADMAP
    }
    var map = new this.google.maps.Map(mapContainer,mapOptions);
}
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true&' + 'callback=showNewMap';
iframe.contentDocument.getElementsByTagName('head')[0].appendChild(script);
};
document.body.appendChild(iframe);

Fiddle：http://jsfiddle.net/gS7sZ/1/

问题与JavaScript中的作用域有关。当您定义showNewMap函数时，它会绑定到主窗口对象，但您需要在iFrame中定义它。以下内容应该有效（请参阅：http://jsfiddle.net/4Ret8/)：

var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
var doc = iframe.contentWindow || iframe.contentDocument;
if (doc.document) { doc = doc.document;}
iframe.contentWindow.showNewMap = function() {
    //debugger;
    var mapContainer =  doc.createElement('div');
    mapContainer.setAttribute('style',"width: 500px; height: 300px");
    doc.body.appendChild(mapContainer);
    var mapOptions = {
        center: new this.google.maps.LatLng(-35.000009, -58.197645),
        zoom: 5,
        mapTypeId: this.google.maps.MapTypeId.ROADMAP
    }
    var map = new this.google.maps.Map(mapContainer,mapOptions);
}
var script = doc.createElement('script');
script.type = 'text/javascript';
script.src = 'https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true&' + 'callback=showNewMap';
doc.getElementsByTagName('head')[0].appendChild(script);

函数showNewMap（）在帧中不可见，您必须在帧中添加函数showNewMap（）

var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
var doc = iframe.contentWindow || iframe.contentDocument;
if (doc.document) { doc = doc.document;}
var func = "function showNewMap() { "+
    "var mapContainer =  document.createElement('div');"+
    "mapContainer.setAttribute('style','width: 500px; height: 300px');"+
    "document.body.appendChild(mapContainer);"+
    "var mapOptions = {"+
    "    center: new google.maps.LatLng(-35.000009, -58.197645),"+
    "    zoom: 5,"+
    "   mapTypeId: google.maps.MapTypeId.ROADMAP"+
    "};"+
    "var map = new google.maps.Map(mapContainer,mapOptions);"+
"}";
var scriptMap = doc.createElement('script');
scriptMap.type = 'text/javascript';
var newContent = document.createTextNode(func);
scriptMap.appendChild(newContent);
doc.getElementsByTagName('head')[0].appendChild(scriptMap);
var script = doc.createElement('script');
script.type = 'text/javascript';
script.src = 'https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true&' +'callback=window.showNewMap';
doc.getElementsByTagName('head')[0].appendChild(script);
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