【发布时间】：2014-03-30 02:28:04
【问题描述】：
我正在尝试将此示例添加到内容管理系统中。一旦映射功能在所有 4 个浏览器中都可以使用，它就会被修改以满足我们的需求。不，我不能给你更多关于 CMS 的信息，因为它是私人的。请不要提及某些使用字符实体的代码。 ex
Ie8 声明 L 未定义。 Chrome 声称未捕获的引用错误 L 未定义。
不过 FF21 和 Safari 5.1.7 显示此示例 http://leafletjs.com/examples/choropleth.html
没有问题为什么当示例在 CMS 中时，某些浏览器不会显示地图。这是演示中的糟糕编码吗？这是脚本加载方式的不同吗？解决此问题的最佳方法是什么？
由于 CMS，doctype 是框架集。
<html>
<head>
<title>Leaflet Layers Control Example</title>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.5.1/leaflet.css" />
<!--[if lte IE 8]><link rel="stylesheet" href="http://leafletjs.com/examples/dist/leaflet.ie.css" /></link><![endif]-->
<style>
#map {
width: 800px;
height: 500px;
}
.info {
padding: 6px 8px;
font: 14px/16px Arial, Helvetica, sans-serif;
background: white;
background: rgba(255,255,255,0.8);
box-shadow: 0 0 15px rgba(0,0,0,0.2);
border-radius: 5px;
}
.info h4 {
margin: 0 0 5px;
color: #777;
}
.legend {
text-align: left;
line-height: 18px;
color: #555;
}
.legend i {
width: 18px;
height: 18px;
float: left;
margin-right: 8px;
opacity: 0.7;
}
</style>
</head>
<body>
<div id="map"></div>
<script src="http://cdn.leafletjs.com/leaflet-0.5.1/leaflet.js"></script>
<script type="text/javascript" src="http://leafletjs.com/examples/us-states.js"></script>
<script type="text/javascript">
var map = L.map('map').setView([37.8, -96], 4);
var cloudmade = L.tileLayer('http://{s}.tile.cloudmade.com/{key}/{styleId}/256/{z}/{x}/{y}.png', {
attribution: 'Map data © 2011 OpenStreetMap contributors, Imagery © 2011 CloudMade',
key: 'BC9A493B41014CAABB98F0471D759707',
styleId: 22677
}).addTo(map);
// control that shows state info on hover
var info = L.control();
info.onAdd = function (map) {
this._div = L.DomUtil.create('div', 'info');
this.update();
return this._div;
};
info.update = function (props) {
this._div.innerHTML = '<h4>US Population Density</h4>' + (props ?
'<b>' + props.name + '</b><br />' + props.density + ' people / mi<sup>2</sup>'
: 'Hover over a state');
};
info.addTo(map);
// get color depending on population density value
function getColor(d) {
return d > 1000 ? '#800026' :
d > 500 ? '#BD0026' :
d > 200 ? '#E31A1C' :
d > 100 ? '#FC4E2A' :
d > 50 ? '#FD8D3C' :
d > 20 ? '#FEB24C' :
d > 10 ? '#FED976' :
'#FFEDA0';
}
function style(feature) {
return {
weight: 2,
opacity: 1,
color: 'white',
dashArray: '3',
fillOpacity: 0.7,
fillColor: getColor(feature.properties.density)
};
}
function highlightFeature(e) {
var layer = e.target;
layer.setStyle({
weight: 5,
color: '#666',
dashArray: '',
fillOpacity: 0.7
});
if (!L.Browser.ie && !L.Browser.opera) {
layer.bringToFront();
}
info.update(layer.feature.properties);
}
var geojson;
function resetHighlight(e) {
geojson.resetStyle(e.target);
info.update();
}
function zoomToFeature(e) {
map.fitBounds(e.target.getBounds());
}
function onEachFeature(feature, layer) {
layer.on({
mouseover: highlightFeature,
mouseout: resetHighlight,
click: zoomToFeature
});
}
geojson = L.geoJson(statesData, {
style: style,
onEachFeature: onEachFeature
}).addTo(map);
map.attributionControl.addAttribution('Population data © <a href="http://census.gov/">US Census Bureau</a>');
var legend = L.control({position: 'bottomright'});
legend.onAdd = function (map) {
var div = L.DomUtil.create('div', 'info legend'),
grades = [0, 10, 20, 50, 100, 200, 500, 1000],
labels = [],
from, to;
for (var i = 0; i < grades.length; i++) {
from = grades[i];
to = grades[i + 1];
labels.push(
'<i style="background:' + getColor(from + 1) + '"></i> ' +
from + (to ? '–' + to : '+'));
}
div.innerHTML = labels.join('<br />');
return div;
};
legend.addTo(map);
</script>
</body>
</html>
【问题讨论】：
标签： javascript cross-browser leaflet