微信小程序自定义日期选择器(已封装成控件，可直接使用）

由于原生的picker页面只能使用默认的无法自定义，在开发中有特殊需求时就需要自定义日期选择器

先看效果，页面可以在css文件中自定义

代码：

datePicker.js

const dateUtils = require('../../../../utils/util.js')

// 初始化日期模态框数据
let date = new Date();
let years = [];
let months = [];
let days = [];
let hours = [];
let minutes = [];
for (let i = date.getFullYear() - 4; i <= (date.getFullYear() + 1); i++) {
    years.push(i + "年")
}
for (let i = 1; i <= 12; i++) {

    if (i < 10) {
        months.push("0" + i + "月")
    } else {
        months.push(i + "月")
    }
}
for (let i = 1; i <= 31; i++) {
    if (i < 10) {
        days.push("0" + i + "日");
    } else {
        days.push(i + "日");
    }

}
for (let i = 0; i <= 23; i++) {
    hours.push(i + "")
}
for (let i = 0; i <= 59; i++) {
    minutes.push(i + "")
}


Component({
    // options: {
    //   multipleSlots: true // 在组件定义时的选项中启用多slot支持
    // },

    properties: {
        // title: {            // 属性名
        //   type: String,     // 类型（必填），目前接受的类型包括：String, Number, Boolean, Object, Array, null（表示任意类型）
        //   value: ''     // 属性初始值（可选），如果未指定则会根据类型选择一个
        // }

        // timeValue: {
        //   type: Array,
        //   value: "标题"
        // },
        // years: {
        //   type: Array,
        //   value: "年"
        // },
        // months: {
        //   type: Array,
        //   value: "月"
        // },
        // days: {
        //   type: Array,
        //   value: "日"
        // },
        // hours: {
        //   type: Array,
        //   value: "小时"
        // },
        // minutes: {
        //   type: Array,
        //   value: "分钟"
        // }
        dateItem: {
            type: String,
            value: "日期"
        },
    },

    data: {
        modalName: null,
        startDate: "",
        endDate: "",
        userName: "",
        farmerId: "",
        timeValue: [2, 3, 4],
        changeFlag: false,
        value: [0, 1, 1],
        openFlag: true,  //1日期控件显示  2控件滚动选择 底部页面不滚动
        years: years,   //时间可选范围模态框数据
        months: months,
        days: days,
        hours: hours,
        minutes: minutes,
        year: '',  //时间值
        month: '',
        day: '',
        hour: '',
        minute: '',
        startTime: dateUtils.stampToDate(),
        selectDate: ""
    },


    methods: {

        //取消
        cancelBtn() {
            // this.triggerEvent("cancelBtn");
            this.hideModal()
        },
        //确认
        confirmBtn(e) {
            if (this.data.selectDate == "") {
                this.triggerEvent("confirmBtn", this.data.dateItem);
            } else {
                this.triggerEvent("confirmBtn", this.data.selectDate);
            }
            this.hideModal();
            // this.bindChangeEvent();
            // this.triggerEvent("bindChangeEvent",e.detail);
        },
        // 调用父组件  事件
        bindChangeEvent(e) {
            // this.triggerEvent("bindChangeEvent",e.detail);
            console.log("datePicker", e);
            let changeDate = "";
            let year1 = years[e.detail.value[0]].replace("年", "-").trim();
            let month1 = months[e.detail.value[1]].replace("月", "-").trim();
            let day1 = this.data.days[e.detail.value[2]].replace("日", "").trim();
            this.setData({
                selectDate: year1 + month1 + day1
            });
            // console.log("year1", year1+month1+day1);
            // console.log("days", days);
            this.setData({
                timeValue: e.detail.value
            });
            let val = e.detail.value;

            const year = this.data.years[val[0]];
            const month = this.data.months[val[1]];
            const day = this.data.days[val[2]];
            const hour = this.data.hours[val[3]];
            const minute = this.data.minutes[val[4]];

            //如果点击月份  那么后面日跟着变换数据
            let days = [];
            const dayNum = dateUtils.mGetDate(year.substr(0, year.length - 1), month.substr(0, month.length - 1));
            for (let i = 1; i <= dayNum; i++) {
                if (i < 10) {
                    days.push("0" + i + "日");
                } else {
                    days.push(i + "日");
                }
            }

            this.setData({
                days,
                year,
                month,
                day,
                hour,
                minute,
                changeFlag: true,
            })
        },

        //显示
        showModal: function () {
            this.setData({
                modalName: "DialogModal1"
            })
            let dateArr = this.data.dateItem.split("-");
            console.log("dateArr", dateArr);
            let yearNum = this.getArrayIndex(years, dateArr[0] + "年");
            let monthNum = this.getArrayIndex(months, dateArr[1] + "月");
            let dayNum = this.getArrayIndex(this.data.days, dateArr[2] + "日");
            this.setData({
                timeValue: [yearNum, monthNum, dayNum]
            });
        },

        hideModal: function () {
            this.setData({
                modalName: null
            })
        },

        getArrayIndex(arr, obj) {
            let i = arr.length;
            while (i--) {
                if (arr[i] === obj) {
                    return i;
                }
            }
            return -1;
        }

    },

});

datePicker.json

{
  "component": true,

  "usingComponents": {
  }
}

datePicker.wxml

        
        
        
            
                
                    取消
                    确定
                
                
                    
                        
                        
                            {{item}}
                        
                        
                        
                            {{item}}
                        
                        
                        
                            {{item}}
                        








                    
                
            
        

datePicker.wxss

/* ==================
         模态窗口
 ==================== */
.cu-modal {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1110;
    opacity: 0;
    outline: 0;
    text-align: center;
    -ms-transform: scale(1.185);
    transform: scale(1.185);
    backface-visibility: hidden;
    perspective: 2000rpx;
    background: rgba(0, 0, 0, 0.6);
    transition: all 0.1s ease-in-out 0s;
    pointer-events: none;
}

.cu-modal::before {
    content: "\200B";
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}

.cu-modal.show {
    opacity: 1;
    transition-duration: 0.3s;
    -ms-transform: scale(1);
    transform: scale(1);
    overflow-x: hidden;
    overflow-y: auto;
    pointer-events: auto;
}

.date-picker-bg {
    position: absolute;
    top: 0;
    z-index: 10000;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: 0.3;
}

.date-picker-view {
    position: absolute;
    bottom: 0;
    z-index: 999999;
    width: 100%;
    background: #fff;
}

picker-view-column {
    text-align: center;
}

view.model_picker {
    position: relative;
}

.button_model {
    height: 80rpx;
    width: 100%;
    background: #fff;
    position: relative;
    border-bottom: 1px solid #d9d9d9;
}

.button_model text {
    color: #007aff;
    position: absolute;
    background: transparent;
    border: none;
    line-height: 80rpx;
}

.button_model text:first-child {
    left: 32rpx;
}

.button_model text:last-child {
    right: 32rpx;
}

.indicator-style-view {
    height: 50px;
    background-color: #0288d112;
    border-top: 5rpx solid #4CD964;
    border-bottom: 5rpx solid #4CD964;
    color: red
}

.pickerSelected {
    color: #D90C04;
}

utils.js

// const formatTime = date => {
//     const year = date.getFullYear()
//     const month = date.getMonth() + 1
//     const day = date.getDate()
//     const hour = date.getHours()
//     const minute = date.getMinutes()
//     const second = date.getSeconds()
//
//     return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
// }


const formatHour = date => {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()

    return hour
};


const formatTime = date => {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()

    return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatDate = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('-') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatData = date => {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()

    return [year, month, day].map(formatNumber).join('-')
}

const formatDataBefore7 = date => {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()-7
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()

    return [year, month, day].map(formatNumber).join('-')
}

const formatDataBefore3 = date => {
    const year = date.getFullYear();
    let month;
    let day;
    if (date.getDate() < 4) {
        month = date.getMonth();
    } else {
        month = date.getMonth() + 1;
    }
    if (date.getDate() < 4) {
        if (date.getMonth() === 2) {
            day = 28 - (3 - date.getDate());
        } else if (date.getMonth() === 1 || date.getMonth() === 3 || date.getMonth() === 5 || date.getMonth() === 7 || date.getMonth() === 8 || date.getMonth() === 10 || date.getMonth() === 12) {
            day = 31 - (3 - date.getDate());
        } else {
            day = 30 - (3 - date.getDate());
        }
    } else {
        day = date.getDate() - 3;
    }


    return [year, month, day].map(formatNumber).join('-');
}

const formatNumber = n => {
    n = n.toString()
    return n[1] ? n : '0' + n
}



// 转换时间
const getDate = (year, month, day, hour, minute) => {
    const newyear = year.substr(0, year.length - 1);
    const setmonth = month.substr(0, month.length - 1);
    const newmonth = setmonth < 10 ? '0' + setmonth : setmonth;
    const setday = day.substr(0, day.length - 1);
    const newday = setday < 10 ? '0' + setday : setday;

    // const sethour = hour.substr(0, hour.length - 1);
    const newhour = hour < 10 ? '0' + hour : hour;
    // const setminute = minute.substr(0, minute.length - 1);

    const newminute = minute < 10 ? '0' + minute : minute;

    return newyear + '-' + newmonth + '-' + newday + ' ' + newhour + ":" + newminute;
};
// 将时间戳转换为时间
const stampToDate = (date) => {
    let now;
    if (date) {
        now = new Date(date)
    } else {
        now = new Date()
    }
    let y = now.getFullYear(),
        m = now.getMonth() + 1,
        d = now.getDate(),
        h = now.getHours(), //获取当前小时数(0-23)
        f = now.getMinutes(),

        n = (Math.ceil((now.getMinutes()) / 10)) * 10; //获取当前分钟数(0-59)  取整数
    return y + "-" + (m < 10 ? "0" + m : m) + "-" + (d < 10 ? "0" + d : d) + " " + (h < 10 ? "0" + h : h) + ":" + (f < 10 ? "0" + f : f);

};

//根据年月  获取天数
const mGetDate = (year, month) => {
    var d = new Date(year, month, 0);
    return d.getDate();
}
//根据时间2019-01-02 09：12  得到 ['2019','1','2','9','12']
const getArrFromDate = (str) => {
    let arr = [];
    let arr1 = str.split(' ');
    let arr2 = (arr1[0]).split('-');
    let arr3 = arr1[1].split(':');
    arr = arr2.concat(arr3);
    arr[1] = arr[1].startsWith('0') ? arr[1].substr(1, arr[1].length) : arr[1];
    arr[2] = arr[2].startsWith('0') ? arr[2].substr(1, arr[2].length) : arr[2];
    arr[3] = arr[3].startsWith('0') ? arr[3].substr(1, arr[3].length) : arr[3];
    arr[4] = arr[4].startsWith('0') ? arr[4].substr(1, arr[4].length) : arr[4];
    return arr;
};

module.exports = {
    formatTime: formatTime,
    formatData: formatData,
    formatDate: formatDate,
    formatDataBefore7: formatDataBefore7,
    formatDataBefore3: formatDataBefore3,
    formatHour: formatHour,
    getDate,
    stampToDate,
    mGetDate,
    getArrFromDate,
}

调用需要的参数

index.wxml