获取两个坐标距离
// 经纬距离计算 function distance(la1, lo1, la2, lo2) { var La1 = (la1 * Math.PI) / 180.0 var La2 = (la2 * Math.PI) / 180.0 var La3 = La1 - La2 var Lb3 = (lo1 * Math.PI) / 180.0 - (lo2 * Math.PI) / 180.0 var s = 2 * Math.asin( Math.sqrt(Math.pow(Math.sin(La3 / 2), 2) + Math.cos(La1) * Math.cos(La2) * Math.pow(Math.sin(Lb3 / 2), 2) ) ) s = s * 6378.137 //千米值 // s = Math.round(s* 10000) / 10000 // s = s.toFixed(2) //米值 s = Math.round(s* 10000) / 10 s = s.toFixed(0) return s }