//最大和最小值
findMaxAndMin(arr) {
var min = arr[0]
var max = arr[0]
for (var i = 0; i < arr.length; i++) {
if (arr[i] > max) {
max = arr[i]
}
if (arr[i] < min) {
min = arr[i]
}
}
return {max,min}
}

distance() {
if (this.item.delivery_distance > 1000) {
return (this.item.delivery_distance / 1000.0).toFixed(1) + 'km'
}else {
return this.item.delivery_distance + 'm'
}
},

replacePrice () {
if (this.item.shop_discount.dis_money.length === 1) {
return "可领" + this.item.shop_discount.dis_money[0] +"元代金券"
}else {
let {max,min} = this.findMaxAndMin(this.item.shop_discount.dis_money)
return "可领" + min + "~" + max +"元代金券"
}
}