tourism-wxapp/nova-tourism/components/homestay/index.js

Component({
    /**
     * 组件的属性列表
     */
    properties: {},

    /**
     * 组件的初始数据
     */
    data: {
        statusBarHeight: 0,
        screenHeight: 0,
        customHeight: 0,
        bottomNavHeight: 0,
        contentHeight: 0,
        
        date_start: '',
        date_end: '',
        daysBetween:1,
        show: false,
    },
    lifetimes: {
        detached: function () {},
        attached: async function () {
            const systemInfo = wx.getSystemInfoSync();
            const statusBarHeight = systemInfo.statusBarHeight || 0;
            const screenHeight = systemInfo.screenHeight || 0;
            const custom = wx.getMenuButtonBoundingClientRect();
            const customHeight = custom.height + 10 + 2 || 0;
            const bottomNavHeight = systemInfo.screenHeight - systemInfo.safeArea.bottom || 0;

            const contentHeight = (screenHeight - bottomNavHeight - 50 - statusBarHeight - customHeight) * 750 / systemInfo.windowWidth;
            this.setData({
                statusBarHeight,
                screenHeight,
                customHeight,
                bottomNavHeight,
                contentHeight
            });
            this.getcurrentdate();
        },
    },
    /**
     * 组件的方法列表
     */
    methods: {
        //获取今日明日日期
        getcurrentdate() {
            const today = new Date();
            const tomorrow = new Date();
            tomorrow.setDate(today.getDate() + 1);
            
            this.setData({
                date_start: this.formatDate(today),
                date_end: this.formatDate(tomorrow),
            });
            console.log(this.data.date_start, this.data.date_end);
        },
        // 计算两个日期之间的天数
        calculateDaysBetween(startDate, endDate) {
            const start = new Date(startDate);
            const end = new Date(endDate);
            const timeDifference = end - start; // 计算时间差（毫秒）
            const daysDifference = timeDifference / (1000 * 3600 * 24); // 转换为天数
            return daysDifference; // 返回天数差
        },
        //开日历
        onDisplay() {
            this.setData({
                show: true
            });
        },
        //关日历
        onClose() {
            this.setData({
                show: false
            });
        },
        //转换日期
        formatDate(date) {
            date = new Date(date);
            return `${date.getMonth() + 1}月${date.getDate()}日`;
        },
        //选好日期点击完成后
        onConfirm(event) {
            const [start, end] = event.detail;
            const daysBetween = this.calculateDaysBetween(start, end); // 计算天数差
            this.setData({
                show: false,
                date_start: `${this.formatDate(start)} `,
                date_end: `${this.formatDate(end)}`,
                daysBetween
            });
            console.log(`入住日期: ${this.data.date_start}, 离店日期: ${this.data.date_end}, 天数差: ${daysBetween}天`);
        },
    }
});