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yourtion/geoDistance.js

Created November 23, 2016 11:00
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经纬度之间的距离（http://itbilu.com/javascript/js/NJWhVH3Z-.html）
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geoDistance.js
function getDistance(lat1, lng1, lat2, lng2) {
var dis = 0;
var radLat1 = toRadians(lat1);
var radLat2 = toRadians(lat2);
var deltaLat = radLat1 - radLat2;
var deltaLng = toRadians(lng1) - toRadians(lng2);
var dis = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(deltaLat / 2), 2) + Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(deltaLng / 2), 2)));
return dis * 6378137;
function toRadians(d) { return d * Math.PI / 180;}
}
console.log(getDistance(39.54, 116.23, 38.85, 115.48))
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