89 lines
1.7 KiB
JavaScript
89 lines
1.7 KiB
JavaScript
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// pages/course/courseOrderList/courseOrderList.js
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Page({
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/**
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* 页面的初始数据
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*/
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data: {
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items: [null, null, null],
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countDown: 30 * 60 , // 初始倒计时
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countDownStr: '' // 用于在视图中渲染的倒计时文本
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},
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/**
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* 生命周期函数--监听页面加载
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*/
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onLoad(options) {
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this.startCountDown();
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},
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/**
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* 生命周期函数--监听页面初次渲染完成
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*/
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onReady() {},
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/**
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* 生命周期函数--监听页面显示
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*/
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onShow() {},
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/**
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* 生命周期函数--监听页面隐藏
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*/
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onHide() {
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clearInterval(this.intervalId);
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},
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/**
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* 生命周期函数--监听页面卸载
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*/
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onUnload() {
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clearInterval(this.intervalId);
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},
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/**
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* 启动倒计时
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*/
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startCountDown() {
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this.updateCountDownStr();
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this.intervalId = setInterval(() => {
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let cd = this.data.countDown;
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if (cd <= 1) {
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clearInterval(this.intervalId);
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this.setData({
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countDown: 0,
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countDownStr: '00分00秒'
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});
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} else {
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cd--;
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this.setData({ countDown: cd });
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this.updateCountDownStr();
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}
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}, 1000);
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},
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/**
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* 更新倒计时显示字符串
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*/
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updateCountDownStr() {
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const minutes = Math.floor(this.data.countDown / 60);
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const seconds = this.data.countDown % 60;
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const str = `${minutes}分${seconds < 10 ? '0' + seconds : seconds}秒`;
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this.setData({ countDownStr: str });
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},
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/**
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* 页面相关事件处理函数--监听用户下拉动作
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*/
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onPullDownRefresh() {},
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/**
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* 页面上拉触底事件的处理函数
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*/
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onReachBottom() {},
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/**
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* 用户点击右上角分享
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*/
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onShareAppMessage() {}
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});
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