我在 LeafLet 中总是收到错误“未定义不是构造函数”。 有人知道如何让这段代码工作吗？
jQuery(document).ready(function() {
var map = L.map('canvas',{zoomControl: false}).setView([38.82259, -2.8125], 3);
map.setMaxBounds([[84.67351256610522, -174.0234375], [-58.995311187950925, 223.2421875]]);
var layer = new L.TileLayer("http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", { noWrap: true}).addTo(map);
var geojsonFeature = {
"type": "Feature",
"properties": {
"name": "Coors Field",
"amenity": "Baseball Stadium",
"popupContent": "This is where the Rockies play!"
},
"geometry": {
"type": "Point",
"coordinates": [-104.99404, 39.75621]
}
};
var geoJson = new L.geoJSON(geojsonFeature).addTo(map);
});
最佳答案
对我来说工作正常。验证您的 Leaflet css 和 JS 是否正确加载。请参阅Preparing your page
<html>
<head>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" integrity="sha512-07I2e+7D8p6he1SIM+1twR5TIrhUQn9+I6yjqD53JQjFiMf8EtC93ty0/5vJTZGF8aAocvHYNEDJajGdNx1IsQ=="
crossorigin="" />
<script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet.js" integrity="sha512-A7vV8IFfih/D732iSSKi20u/ooOfj/AGehOKq0f4vLT1Zr2Y+RX7C+w8A1gaSasGtRUZpF/NZgzSAu4/Gc41Lg=="
crossorigin=""></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
</head>
<body>
<div id="canvas" style="width: 100%; height: 100%;"></div>
<script>
jQuery(document).ready(function () {
var map = L.map('canvas', { zoomControl: false }).setView([38.82259, -2.8125], 3);
map.setMaxBounds([[84.67351256610522, -174.0234375], [-58.995311187950925, 223.2421875]]);
var layer = new L.TileLayer("http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", { noWrap: true }).addTo(map);
var geojsonFeature = {
"type": "Feature",
"properties": {
"name": "Coors Field",
"amenity": "Baseball Stadium",
"popupContent": "This is where the Rockies play!"
},
"geometry": {
"type": "Point",
"coordinates": [-104.99404, 39.75621]
}
};
var geoJson = new L.geoJSON(geojsonFeature).addTo(map);
});
</script>
</body>
</html>
关于javascript - geoJSON undefined 不是构造函数，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43875633/