mpvue微信小程序多列選擇器用法之省份城市選擇的實現(xiàn)

<picker
 mode="region"
 bindchange="bindRegionChange"
 value="{{region}}"
 custom-item="{{customItem}}"
 >

{
 "code": 0,
 "msg": "success",
 "data": [
 {
 "id": 2,
 "name": "北京",
 "children": [
 {
 "id": 36,
 "name": "北京市"
 }
 ]
 }
 ]
}

<picker
 mode="multiSelector"
 @change="bindCityChange"
 @columnchange="bindCityColumnChange"
 :value="multiIndex"
 :range="multiArray"
 range-key="name"
 >
 <view class="picker">選擇城市{{userInfo.province.name}},{{userInfo.city.name}}</view>
 </picker>

 mode="multiSelector"

[["北京", "湖南"], ["長沙", "永州"]]

// 城市選擇 獲取選中的值 [0,0] 這里需要注意的是獲取值的方式在mpvue中通過e.mp.detail.value而不是e.detail.value
 bindCityChange(e) {
 // 選中的值索引
 console.log(e.mp.detail.value[0], e.mp.detail.value[1]);
 // 選中的省份和城市數(shù)據(jù)
 console.log(
 this.multiArray[0][e.mp.detail.value[0]],
 this.multiArray[1][e.mp.detail.value[1]]
 );
 this.userInfo.province = this.multiArray[0][e.mp.detail.value[0]];
 this.userInfo.city = this.multiArray[1][e.mp.detail.value[1]];
 },

console.log(
 "修改的列為",
 e.mp.detail.column,
 "，值為",
 e.mp.detail.value
 );

// 監(jiān)聽滾動事件 滾動第一列 修改第二列數(shù)據(jù)
 bindCityColumnChange(e) {
 // 更新multiIndex的值
 this.multiIndex[e.mp.detail.column] = e.mp.detail.value;
 //加載對應省份下城市數(shù)據(jù)
 switch (e.mp.detail.column) {
 case 0:
 // this.multiArray[1] = this.cityList[e.mp.detail.value].children;
 this.multiArray = [
 this.cityList,
 this.cityList[e.mp.detail.value].children
 ];
 break;
 }
 },

data() {
 return {
multiIndex: [0, 0],
 multiArray: [],
 }
 }