微信小程序-二级联动、时间选择器（只精确到分）

一、二级联动

1）效果

 2）实现

    
      
        当前选择：{{multiArray[0][multiIndex[0]]}}，{{multiArray[1][multiIndex[1]]}}
      
    

data:{
 multiArray: [['宴会庆典', '峰会论坛', '商业活动'], ["协会活动", "慈善活动", "答谢活动", "区块链", "人工智能", "大数据", "品牌推广", "开业庆典", "展会活动"]],
 multiIndex: [0, 0],
},

  bindMultiPickerChange(e) {
    this.setData({
      multiIndex: e.detail.value
    })
  },
  bindMultiPickerColumnChange(e) {
    const data = {
      multiArray: this.data.multiArray,
      multiIndex: this.data.multiIndex
    }
    data.multiIndex[e.detail.column] = e.detail.value
    switch (e.detail.column) {
      case 0:
        switch (data.multiIndex[0]) {
          case 0:
            data.multiArray[1] = ["协会活动", "慈善活动", "答谢活动"]
            break
          case 1:
            data.multiArray[1] = ["区块链", "人工智能", "大数据"]
            break
          case 2:
            data.multiArray[1] = ["品牌推广", "开业庆典", "展会活动"]
            break
        }
        data.multiIndex[1] = 0
        break
    }
    console.log(data.multiIndex)
    this.setData(data)
  },

二、时间选择器（只精确到分）

1）效果

2）实现

 
        
          
            *
            时间
          
          
            
              
                
              
            
          
        

var dateTimePicker = require('../../utils/dateTimePicker.js');

data:{
    dateTime1: null, //开始时间value
    dateTimeArray1: null, //开始时间数组},
}

onLoad:function(options){
/***此处封装称方法***/
 // 获取完整的年月日 时分秒，以及默认显示的数组
    var obj = dateTimePicker.dateTimePicker(this.data.startYear, this.data.endYear);
    var obj1 = dateTimePicker.dateTimePicker(this.data.startYear, this.data.endYear);
    // 精确到分的处理，将数组的秒去掉
    var lastArray = obj1.dateTimeArray.pop();
    var lastTime = obj1.dateTime.pop();
    this.setData({
      dateTimeArray1: obj1.dateTimeArray,
      dateTime1: obj1.dateTime,
    });
/***此处封装称方法***/
},

/***开始时间改变时出发*/
  changeStartDateTime(e) {
    let arr = e.detail.value
    let dateArr = this.data.dateTimeArray1;
    this.setData({
      startTime: dateArr[0][arr[0]] + '-' + dateArr[1][arr[1]] + '-' + dateArr[2][arr[2]] + ' ' + dateArr[3][arr[3]] + ':' + dateArr[4][arr[4]]
    });
    //验证开始时间不能大于结束时间
    this.checkStartAndEndTime();

  },
/**某一列的值改变时触发*/
  changeDateTimeColumn1(e) {
    let arr = this.data.dateTime1
    let dateArr = this.data.dateTimeArray1;
    arr[e.detail.column] = e.detail.value;
    this.setData({
      startTime: dateArr[0][arr[0]] + '-' + dateArr[1][arr[1]] + '-' + dateArr[2][arr[2]] + ' ' + dateArr[3][arr[3]] + ':' + dateArr[4][arr[4]]
    });
  },

3）dateTimePicker.js

function withData(param) {
  return param < 10 ? '0' + param : '' + param;
}
function getLoopArray(start, end) {
  var start = start || 0;
  var end = end || 1;
  var array = [];
  for (var i = start; i <= end; i++) {
    array.push(withData(i));
  }
  return array;
}
function getMonthDay(year, month) {
  var flag = year % 400 == 0 || (year % 4 == 0 && year % 100 != 0), array = null;

  switch (month) {
    case '01':
    case '03':
    case '05':
    case '07':
    case '08':
    case '10':
    case '12':
      array = getLoopArray(1, 31)
      break;
    case '04':
    case '06':
    case '09':
    case '11':
      array = getLoopArray(1, 30)
      break;
    case '02':
      array = flag ? getLoopArray(1, 29) : getLoopArray(1, 28)
      break;
    default:
      array = '月份格式不正确，请重新输入！'
  }
  return array;
}
function getNewDateArry() {
  // 当前时间的处理
  var newDate = new Date();
  var year = withData(newDate.getFullYear()),
    mont = withData(newDate.getMonth() + 1),
    date = withData(newDate.getDate()),
    hour = withData(newDate.getHours()),
    minu = withData(newDate.getMinutes()),
    seco = withData(newDate.getSeconds());

  return [year, mont, date, hour, minu, seco];
}
function dateTimePicker(startYear, endYear, date) {
  // 返回默认显示的数组和联动数组的声明
  var dateTime = [], dateTimeArray = [[], [], [], [], [], []];
  var start = startYear || 2019;
  var end = endYear || 2100;
  // 默认开始显示数据
  var defaultDate = date ? [...date.split(' ')[0].split('-'), ...date.split(' ')[1].split(':')] : getNewDateArry();
  // 处理联动列表数据
  /*年月日 时分秒*/
  dateTimeArray[0] = getLoopArray(start, end);
  dateTimeArray[1] = getLoopArray(1, 12);
  dateTimeArray[2] = getMonthDay(defaultDate[0], defaultDate[1]);
  dateTimeArray[3] = getLoopArray(0, 23);
  dateTimeArray[4] = getLoopArray(0, 59);
  dateTimeArray[5] = getLoopArray(0, 59);

  dateTimeArray.forEach((current, index) => {
    dateTime.push(current.indexOf(defaultDate[index]));
  });

  return {
    dateTimeArray: dateTimeArray,
    dateTime: dateTime
  }
}
module.exports = {
  dateTimePicker: dateTimePicker,
  getMonthDay: getMonthDay
}