WeChat アプレットの例: カスタム日付コントロールを実装するコード-ミニプログラム開発-php.cn

この記事では、WeChat アプレットの例を紹介します。特定の参照値を持つカスタム日付コントロールを実装するコードです。必要な方は参考にしていただければ幸いです。
最近、WeChat アプレットを研究していて、Maoyan アプリで日付を選択するのと同じように、日、週、月、年などで日付をカスタマイズできるカスタム日付関数を実装する必要があります。このため、必要な友人が参照できるようにコンポーネントが提供されるものとして特別に記述されています。
私が使用しているフレームワークは wepy なので、コンポーネント構造は wepy コード構造です。
概要:
1. 日次カレンダーコントロールは、ポールカレンダープラグインを使用します。詳細については、https://github.com/czcaiwj/calendar を参照してください。
2. コンポーネントで使用される一部のコンポーネントは、weapp です。詳細については、私の他の共有を参照してください: https://www.jianshu.com/p/e07b7cf5e494; 3. 2017 年から現在までの週を選択しました。他の記事の共有記事: https://www.jianshu.com/p/5112df795162; これは、私自身の開発ニーズにより、この記事の onLoad() メソッドにも実装されています。これは、独自の開発ニーズに基づいて調整できます。
4. このコンポーネントのデフォルトの時間は、実際のニーズに応じて調整することもできます。
実装効果:
コードは次のとおりです:
<style type="less">
    .home {
        height: 100%;
        .calendar-header {
            font-size: large;
            color: #406BF8;
         }
        .calendar-board {
            color: #406BF8;
        }
        .week_year_style {
            font-size: 30 rpx;
            padding: 20 rpx 15 rpx;
            text-align: center;
        }
        .week_selectyear_style {
            background-color: #fff;
            color: #406BF8;
        }
        .calendar {
            background-color: #fcfcfc;
            //padding-top: 10px;
        }
    }
</style>
<template>
    <view class="home page">
        <i-tabs current="{{ currentTab }}" color="#406BF8" bindchange="handleChangeTab">
            <i-tab key="按日" title="按日"></i-tab>
            <i-tab key="按周" title="按周"></i-tab>
            <i-tab key="按月" title="按月"></i-tab>
            <i-tab key="按年" title="按年"></i-tab>
            <i-tab key="自定义" title="自定义"></i-tab>
        </i-tabs>
        <view hidden="{{currentTab != &#39;按日&#39;}}" style="margin-top: 30rpx">
            <calendar cell-size="40"
                      show-more-days="true"
                      lunar="true"
                      weeks-type="cn"
                      calendar-style="calendar"
                      header-style="calendar-header"
                      board-style="calendar-board"
                      days-color="{{days_style}}"
                      start-date="2017-01"
                      end-date="2018-08"
                      binddayClick="dayClick"
                      bindnextMonth="next"
                      bindprevMonth="prev"
            />
        </view>
        <view hidden="{{currentTab != &#39;按周&#39;}}">
            <view style="display: flex">
                <view style="width: 160rpx;background-color: #f6f6f6;border-right: 1rpx solid #e6e6e6">
                    <block wx:for="{{yearArray}}" wx:for-item="item" wx:key="item">
                        <view class="week_year_style {{weeksYears==item?&#39;week_selectyear_style&#39;:&#39;&#39;}}"
                              bindtap=&#39;changeWeekYear({{item}})&#39;>{{item + &#39;年&#39;}}
                        </view>
                    </block>
                </view>
                <scroll-view scroll-y style="height: 600px;">
                    <i-cell-group>
                        <block wx:for="{{weeksArray[weeksYears]}}" wx:for-item="category" wx:key="category">
                            <i-cell title="{{category.weeks}}" bindtap="handleWeeksChange(&#39;{{index}}&#39;)">
                                <i-icon wx:if="{{category.select}}" type="right" size="20" color="#406BF8"
                                        slot="footer"/>
                            </i-cell>
                        </block>

                    </i-cell-group>
                </scroll-view>
            </view>
        </view>

        <view hidden="{{currentTab != &#39;按月&#39;}}">
            <view style="display: flex">
                <view style="width: 160rpx;background-color: #f6f6f6;border-right: 1rpx solid #e6e6e6">
                    <block wx:for="{{yearArray}}" wx:for-item="item" wx:key="item">
                        <view class="week_year_style {{monthYear==item?&#39;week_selectyear_style&#39;:&#39;&#39;}}"
                              bindtap=&#39;changeMonthYear({{item}})&#39;>{{item + &#39;年&#39;}}
                        </view>
                    </block>

                </view>
                <scroll-view scroll-y style="height: 600px;">
                    <i-cell-group>
                        <block wx:for="{{monthYear==year?currentMonthArray:fullMonthArray}}" wx:for-item="category"
                               wx:key="*this">
                            <i-cell title="{{category+&#39;月&#39;}}" bindtap="handleMonthChange(&#39;{{category}}&#39;)">
                                <i-icon wx:if="{{category==selectMonth}}" type="right" size="20" color="#406BF8"
                                        slot="footer"/>
                            </i-cell>
                        </block>

                    </i-cell-group>
                </scroll-view>
            </view>
        </view>

        <view hidden="{{currentTab != &#39;按年&#39;}}">
            <i-cell-group>
                <block wx:for="{{yearArray}}" wx:for-item="category" wx:key="category">
                    <i-cell title="{{category+&#39;年&#39;}}" bindtap="handleYearChange(&#39;{{category}}&#39;)">
                        <i-icon wx:if="{{category==selectYear }}" type="right" size="20" color="#406BF8" slot="footer"/>
                    </i-cell>
                </block>

            </i-cell-group>
        </view>

        <view hidden="{{currentTab != &#39;自定义&#39;}}" style="margin-top: 30rpx">
            <calendar cell-size="40"
                      show-more-days="true"
                      lunar="true"
                      weeks-type="cn"
                      calendar-style="calendar"
                      header-style="calendar-header"
                      board-style="calendar-board"
                      days-color="{{define_days_style}}"
                      start-date="2017-01"
                      end-date="2018-08"
                      binddayClick="dayClick_define"
                      bindnextMonth="next_define"
                      bindprevMonth="prev_define"

            />
        </view>

    </view>
</template>
<script>
    import wepy from &#39;wepy&#39;;

    const MONTHS = [&#39;Jan.&#39;, &#39;Feb.&#39;, &#39;Mar.&#39;, &#39;Apr.&#39;, &#39;May.&#39;, &#39;June.&#39;, &#39;July.&#39;, &#39;Aug.&#39;, &#39;Sept.&#39;, &#39;Oct.&#39;, &#39;Nov.&#39;, &#39;Dec.&#39;];

    export default class TabsContent extends wepy.component {
        props = {
            openDateModal: {
                type: Boolean,
                default: false,
                twoWay: true
            },
            dateSelect: {
                type: String,
                default: &#39;&#39;,
                twoWay: true
            },
            dateFilter: {
                type: String,
                default: &#39;&#39;,
                twoWay: true
            },
            filterWeekArray: {
                type: String,
                default: &#39;&#39;,
                twoWay: true
            },
            filterWeekSelect: {
                type: String,
                default: &#39;&#39;,
                twoWay: true
            }
        };
        data = {
            currentTab: &#39;按日&#39;,  //Tabs页切换

            year: new Date().getFullYear(),      // 年份
            month: new Date().getMonth() + 1,    // 月份
            day: new Date().getDate(),
            str: MONTHS[new Date().getMonth()],  // 月份字符串

            days_style: [{month: &#39;current&#39;, day: new Date().getDate(), color: &#39;#fff&#39;, background: &#39;#eb4986&#39;}],  //按日选中日期样式
            selectDate: [],   //按日选择的日期

            yearArray: [],  //从2017年起至今
            weeksYears: new Date().getFullYear(),  //按周选择了哪一年
            weeksArray: {},   //从2017年起至今的所有周
            selectWeekArray: [],   //选择的周

            fullMonthArray: [12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1],
            currentMonthArray: [],  //今年过了几个月
            monthYear: new Date().getFullYear(),  //按月选择了哪一年
            selectMonth: 0,  //按月选择了哪一月

            selectYear: 0,  //按年选择了哪一年

            define_days_style: [{month: &#39;current&#39;, day: new Date().getDate(), color: &#39;#fff&#39;, background: &#39;#eb4986&#39;}],  //自定义日期格式
            selectDate_define: []


        };

        methods = {
            handleChangeTab({detail}) {
                this.currentTab = detail.key
                this.dateFilter = this.currentTab
            },

            dayClick: function (event) {
                let style = (event.detail.year == this.year && event.detail.month == this.month) ?
                    [{month: &#39;current&#39;, day: new Date().getDate(), color: &#39;#fff&#39;, background: &#39;#eb4986&#39;},
                        {month: &#39;current&#39;, day: event.detail.day, color: &#39;#fff&#39;, background: &#39;#406BF8&#39;}] :
                    [{month: &#39;current&#39;, day: event.detail.day, color: &#39;#fff&#39;, background: &#39;#406BF8&#39;}]
                this.days_style = style
                this.selectDate = [event.detail.year, event.detail.month, event.detail.day]
                this.openDateModal = false
                this.dateFilter = this.currentTab
                this.dateSelect = [event.detail.year, event.detail.month, event.detail.day]
            },
            next: function (event) {
                if (event.detail.currentYear == this.year && event.detail.currentMonth == this.month)
                    this.days_style = [{
                        month: &#39;current&#39;,
                        day: new Date().getDate(),
                        color: &#39;#fff&#39;,
                        background: &#39;#eb4986&#39;
                    }]
                else this.days_style = [vent.detail.year, event.detail.month, event.detail.day]
            },
            prev: function (event) {
                this.days_style = []
            },

            changeWeekYear(year) {
                this.weeksYears = year
            },
            handleWeeksChange(weekIndex) {
                this.weeksArray[this.weeksYears][weekIndex].select = !this.weeksArray[this.weeksYears][weekIndex].select

                if (this.selectWeekArray[this.weeksYears]) {
                    let bool = this.selectWeekArray[this.weeksYears].some(index => index == weekIndex)
                    if (bool) { //真 已存在 delete
                        //if(this.selectWeekArray[this.weeksYears].length>1)
                        this.selectWeekArray[this.weeksYears].remove(weekIndex)
                    } else {   //假  push
                        this.selectWeekArray[this.weeksYears].push(weekIndex)
                        this.selectWeekArray[this.weeksYears].sort()
                    }
                } else {
                    let temp = {}
                    temp[this.weeksYears] = []
                    let a = [weekIndex]
                    temp[this.weeksYears] = a
                    this.selectWeekArray = temp
                }
                this.filterWeekSelect = this.selectWeekArray  //回调到父级页面
            },

            changeMonthYear(year) {
                this.monthYear = year
            },
            handleMonthChange(month) {
                this.selectMonth = month
                this.openDateModal = false
                this.dateFilter = this.currentTab
                this.dateSelect = [this.monthYear, this.selectMonth]
            },

            handleYearChange(year) {
                this.selectYear = year
                this.openDateModal = false
                this.dateFilter = this.currentTab
                this.dateSelect = [year]
            },

            dayClick_define: function (event) {
                let style = []
                if (this.selectDate_define.length == 0) {  //第一次点击
                    this.selectDate_define.push([event.detail.year, event.detail.month, event.detail.day])
                    if (event.detail.year == this.year && event.detail.month == this.mounth) {
                        style = [{month: &#39;current&#39;, day: new Date().getDate(), color: &#39;#fff&#39;, background: &#39;#eb4986&#39;},
                            {month: &#39;current&#39;, day: event.detail.day, color: &#39;#fff&#39;, background: &#39;#406BF8&#39;}]
                    }
                    this.define_days_style = style
                } else if (this.selectDate_define.length == 1) {   //选中第二个日期就关闭页面
                    this.selectDate_define.push([event.detail.year, event.detail.month, event.detail.day])
                    this.define_days_style.push({
                        month: &#39;current&#39;,
                        day: event.detail.day,
                        color: &#39;#fff&#39;,
                        background: &#39;#406BF8&#39;
                    })

                    this.openDateModal = false
                    this.dateFilter = this.currentTab
                    this.dateSelect = this.selectDate_define
                } else {   //重新自定义日期
                    this.selectDate_define = [[event.detail.year, event.detail.month, event.detail.day]]
                    style = [{month: &#39;current&#39;, day: new Date().getDate(), color: &#39;#fff&#39;, background: &#39;#eb4986&#39;},
                        {month: &#39;current&#39;, day: event.detail.day, color: &#39;#fff&#39;, background: &#39;#406BF8&#39;}]
                    this.define_days_style = style
                }
            },
            next_define: function (event) {
                if (event.detail.currentYear == this.year && event.detail.currentMonth == this.month)
                    this.define_days_style = [{
                        month: &#39;current&#39;,
                        day: new Date().getDate(),
                        color: &#39;#fff&#39;,
                        background: &#39;#eb4986&#39;
                    }]
                else this.define_days_style = [event.detail.year, event.detail.month, event.detail.day]
            },
            prev_define: function (event) {
                this.define_days_style = []
            },

        };

        onLoad() {
            let currentYear = new Date().getFullYear()
            let currentMonth = new Date().getMonth() + 1
            for (var i = currentYear; i >= 2017; i--) {
                this.yearArray.push(i)
            }
            for (var i = currentMonth; i >= 1; i--) {
                this.currentMonthArray.push(i)
            }

            let weeksArray = {}   //计算2017年至今的所有周
            for (var i = 0; i <= this.yearArray.length; i++) {
                let index = 1;
                let temp = []
                if (i == 0) {  //今年
                    for (let i of createWeeks(this.yearArray[i])) {
                        let start = i[0],
                            end = i[1];
                        if (end <= new Date().getTime() || (start <= new Date().getTime() && end >= new Date().getTime())) {
                            let a = start <= new Date().getTime() && end >= new Date().getTime() ?
                                &#39;第&#39; + formatDig(index++) + &#39;周（&#39; + formatDate(start) + &#39;日-&#39; + formatDate(end) + &#39;日)&#39; + &#39; 本周&#39; :
                                &#39;第&#39; + formatDig(index++) + &#39;周（&#39; + formatDate(start) + &#39;日-&#39; + formatDate(end) + &#39;日)&#39;
                            temp.push({&#39;weeks&#39;: a, &#39;select&#39;: false})
                        }
                    }
                } else {
                    for (let i of createWeeks(this.yearArray[i])) {
                        let start = i[0],
                            end = i[1];
                        let a = &#39;第&#39; + formatDig(index++) + &#39;周（&#39; + formatDate(start) + &#39;日-&#39; + formatDate(end) + &#39;日)&#39;
                        temp.push({&#39;weeks&#39;: a, &#39;select&#39;: false})
                    }
                }
                if (this.yearArray[i] != undefined) {
                    weeksArray[this.yearArray[i]] = temp.reverse();
                }
            }
            this.weeksArray = weeksArray
            this.filterWeekArray = weeksArray

        }
    }

    function formatDig(num) {
        //return num>9?&#39;&#39;+num:&#39;0&#39;+num;
        return num;
    }

    function formatDate(mill) {
        var y = new Date(mill);
        let raws = [
            //y.getFullYear(),
            formatDig(y.getMonth() + 1),
            formatDig(y.getDate()),
            //y.getDay()||7  //获取星期几
        ];
        //let format=[&#39;年&#39;,&#39;月&#39;,&#39;日 星期&#39;];
        let format = [&#39;月&#39;, &#39;日&#39;];
        return String.raw({raw: raws}, ...format);
    }

    function* createWeeks(year) {
        const ONE_DAY = 24 * 3600 * 1000;
        let start = new Date(year, 0, 1),
            end = new Date(year, 11, 31);
        let firstDay = start.getDay() || 7,
            lastDay = end.getDay() || 7;
        let startTime = +start,
            endTime = startTime + (7 - firstDay) * ONE_DAY,
            _endTime = end - (7 - lastDay) * ONE_DAY;
        yield [startTime, endTime];
        startTime = endTime + ONE_DAY;
        endTime = endTime + 7 * ONE_DAY;
        while (endTime < _endTime) {
            yield [startTime, endTime];
            startTime = endTime + ONE_DAY;
            endTime = endTime + 7 * ONE_DAY;
        }
        yield [startTime, +end];
    }

    Array.prototype.remove = function (val) {
        var index = this.indexOf(val);
        if (index > -1) {
            this.splice(index, 1);
        }
    };
</script>
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