39 lines
880 B
JavaScript
39 lines
880 B
JavaScript
Page({
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data: {
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// 初始倒计时字符串
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countdown: '30分00秒'
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},
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onLoad(options) {
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// 启动倒计时（总秒数 = 29*60 + 17）
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this.initCountdown(30 * 60 );
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},
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/**
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* 初始化倒计时
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* @param {number} totalSeconds 初始总秒数
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*/
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initCountdown(totalSeconds) {
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this.countdownTimer = setInterval(() => {
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if (totalSeconds <= 0) {
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clearInterval(this.countdownTimer);
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this.setData({ countdown: '00分00秒' });
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return;
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}
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totalSeconds--;
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const m = Math.floor(totalSeconds / 60);
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const s = totalSeconds % 60;
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const mm = m < 10 ? '0' + m : '' + m;
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const ss = s < 10 ? '0' + s : '' + s;
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this.setData({ countdown: `${mm}分${ss}秒` });
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}, 1000);
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},
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onUnload() {
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// 页面卸载时清除定时器
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clearInterval(this.countdownTimer);
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}
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});
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