jQuery 传单中的javascript映射如何刷新
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javascript map in leaflet how to refresh
提问by user609306
i have a basic geoJson program in javascript by using leaflet API.
我通过使用传单 API 在 javascript 中有一个基本的 geoJson 程序。
<html>
<head>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.css" />
<script src="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.js"></script>
<script src="india.js" type="text/javascript"></script>
</head>
<body>
<div id = "map1" style="width: 1100px; height: 400px"> </div>
<script>
var area = L.map('map1', {center: [27.8800,78.0800], zoom: 4 });
L.tileLayer('http://a.tiles.mapbox.com/v3/raj333.map-gugr5h08/{z}/{x}/{y}.png').addTo(area);
var indiaLayer= L.geoJson(india, {style: {weight: 2,
opacity: 1,
color: 'white',
dashArray: '3',
fillOpacity: 0.1}});
area.addLayer(indiaLayer);
function clicked(){
this.options.style.fillOpacity = 0.8;
//how to refresh layer in the given map
}
indiaLayer.on('click', clicked);
</script>
</body>
</html>
the problem is how would i automatically refresh the content of Layer on the map.
问题是我如何自动刷新地图上图层的内容。
example here
例子在这里
function clicked(){
indiaLayer.style.fillOpacity = 0.8;
//how to refresh layer in the given map
}
indiaLayer.on('click', clicked);
when user click on indiaLayer , the fillOpacity variable changes but doesn't reflect back on map which is understood since i am not refreshing the map. I don't know how to do it.
当用户点击 indiaLayer 时， fillOpacity 变量会发生变化，但不会反映在地图上，这是可以理解的，因为我没有刷新地图。我不知道该怎么做。
please help
请帮忙
P/s: these are the functions available on indiaLayer object (i.e. this object inside clicked function...which one to use for this purpose or there exist none)
P/s：这些是 indiaLayer 对象上可用的功能（即点击功能内的这个对象......为此目的使用哪个或不存在）
You can check the list of methods available of GEOJson in the Leaflef documentationThis is the link to v.0.7.7, which is the closest available to used in this example.
您可以在Leaflef 文档中查看GEOJson 的可用方法列表这是指向 v.0.7.7 的链接，这是本示例中最接近的可用方法。
回答by Elephant
Last time I've used
我上次用过
map._onResize();
and that help me refresh map. Maybe a little hack, but, it work.
这有助于我刷新地图。也许有点黑客，但是，它的工作。
In your code will be area._onResize()
在您的代码中将是 area._onResize()
P.S: Maybe you should try change the way to set new opacity value - try change
PS：也许您应该尝试更改设置新不透明度值的方式 - 尝试更改
function clicked(){
this.options.style.fillOpacity = 0.8;
}
to that
到那个
function clicked(){
this.setStyle({fillOpacity: 0.2});
}
回答by Pavel Kharibin
map.invalidateSize();
map._onResize()- it's a hack, and there is no guarantee that it won't be removed in future versions.
map._onResize()- 这是一个 hack，不能保证它不会在未来的版本中被删除。
回答by justDev7a3
area.fitBounds(area.getBounds());
area.fitBounds(area.getBounds());
