学员端小程序
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import store from '@/store';
const install = (Vue, vm) => {
// 打开地图
const openMap = (lat, lng) => {
uni.openLocation({
latitude: lat,
longitude: lng
})
}
// 距离换算
const distanceFn = (val) => {
if (val * 1 < 1000) {
return val + '米'
} else {
return (val / 1000).toFixed(2) + '公里'
}
}
// 价格计算
const priceTo = (price = 0) => {
// return (price / 100).toFixed(2)
return (parseInt(price * 100) / 100 / 100).toFixed(2)
}
const distanceLatLng = (lat1, lng1) => {
var that = this;
let lat2 = store.state.latLng.lat;
let lng2 = store.state.latLng.lng;
let rad1 = lat1 * Math.PI / 180.0;
let rad2 = lat2 * Math.PI / 180.0;
let a = rad1 - rad2;
let b = lng1 * Math.PI / 180.0 - lng2 * Math.PI / 180.0;
let s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(rad1) *
Math.cos(
rad2) * Math.pow(
Math.sin(b / 2), 2)));
s = s * 6378.137;
s = Math.round(s * 10000) / 10000;
s = s.toString();
s = s.substring(0, s.indexOf('.') + 2);
return s
}
const getLocation = () => {
return new Promise((resolve, reject) => {
uni.getLocation({
type: 'wgs84',
success: function(res) {
console.log('当前位置的经度:' + res.longitude);
console.log('当前位置的纬度:' + res.latitude);
let obj = {
lat: res.latitude,
lng: res.longitude
}
store.commit('updateLatLng', obj)
resolve(obj)
}
});
}).catch((e) => {})
}
function addZeroPrefix(number) {
return number < 10 ? `0${number}` : number
}
let getDate = (date, splitor = '-') => {
const year = date.getFullYear()
const month = date.getMonth() + 1
const day = date.getDate()
return `${year}${splitor}${addZeroPrefix(month)}${splitor}${addZeroPrefix(day)}`
}
vm.$u.utils = {
openMap,
getLocation,
priceTo,
distanceLatLng,
distanceFn,
getDate,
}
}
export default {
install
}