【发布时间】:2015-10-18 08:27:11
【问题描述】:
我正在尝试从 XML 文件或 JSON 文件(我都托管在本地测试服务器上的同一目录中)加载用于谷歌地图的坐标列表。到目前为止,我已经使用硬编码的 JSON 对象来加载地图坐标以进行测试。我的问题是,如何用我服务器上的 XML/JSON 文件替换那个假的/硬编码的 JSON?这是我的代码:
(function() {
// Creating an array that will contain all of our product icons
var productIcons = [];
productIcons['bulletin'] = new google.maps.MarkerImage(
'icons/Bulletin-sm.png',
new google.maps.Size(48, 48),
null,
new google.maps.Point(24, 24)
);
productIcons['bus'] = new google.maps.MarkerImage(
'icons/busicon.png',
new google.maps.Size(48, 48),
null,
new google.maps.Point(24, 24)
);
productIcons['bench'] = new google.maps.MarkerImage(
'icons/BusBench-sm.png',
new google.maps.Size(48, 48),
null,
new google.maps.Point(24, 24)
);
productIcons['junior'] = new google.maps.MarkerImage(
'icons/JuniorPoster-sm.png',
new google.maps.Size(48, 48),
null,
new google.maps.Point(24, 24)
);
productIcons['poster'] = new google.maps.MarkerImage(
'icons/Poster-sm.png',
new google.maps.Size(48, 48),
null,
new google.maps.Point(24, 24)
);
productIcons['shelter'] = new google.maps.MarkerImage(
'icons/TransitShelter-sm.png',
new google.maps.Size(48, 48),
null,
new google.maps.Point(24, 24)
);
window.onload = function() {
// Creating a map
var options = {
zoom: 3,
center: new google.maps.LatLng(37.09, -95.71),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map'), options);
// Creating a JSON object with fake product data (to be replaced by XML or JSON)
var productData = {'product': [
{
'lat': 40.756054,
'lng': -119.986951,
'productType': 'junior'
},
{
'lat': 35.620973,
'lng': -121.347276,
'productType': 'shelter'
},
{
'lat': 40.620973,
'lng': -121.347276,
'productType': 'bus'
},
{
'lat': 39.120973,
'lng': -122.847276,
'productType': 'bench'
},
{
'lat': 35.920973,
'lng': -122.347276,
'productType': 'bulletin'
},
{
'lat': 37.775206,
'lng': -122.419209,
'productType': 'poster'
}
]};
// Looping through the product array in productData
for (var i = 0; i < productData.product.length; i++) {
// creating a variable that will hold the current product object
var product = productData.product[i];
// Creating marker
var marker = new google.maps.Marker({
position: new google.maps.LatLng(product.lat, product.lng),
map: map,
icon: productIcons[product.productType]
});
}
}
})();
【问题讨论】:
-
您必须使用服务器端代码加载 JSON 文件,因为浏览器无权访问您的服务器端文件。您可能会将 JSON 注入您的页面以供 Javascript 使用。
标签: javascript json xml google-maps-api-3