commission--yt-commit

pages/course/waitPayOrder/waitPayOrder.js

@@ -0,0 +1,38 @@
+Page({
+
+  data: {
+    // 初始倒计时字符串
+    countdown: '30分00秒'
+  },
+
+  onLoad(options) {
+    // 启动倒计时（总秒数 = 29*60 + 17）
+    this.initCountdown(30 * 60 );
+  },
+  
+  /**
+   * 初始化倒计时
+   * @param {number} totalSeconds 初始总秒数
+   */
+  initCountdown(totalSeconds) {
+    this.countdownTimer = setInterval(() => {
+      if (totalSeconds <= 0) {
+        clearInterval(this.countdownTimer);
+        this.setData({ countdown: '00分00秒' });
+        return;
+      }
+      totalSeconds--;
+      const m = Math.floor(totalSeconds / 60);
+      const s = totalSeconds % 60;
+      const mm = m < 10 ? '0' + m : '' + m;
+      const ss = s < 10 ? '0' + s : '' + s;
+      this.setData({ countdown: `${mm}分${ss}秒` });
+    }, 1000);
+  },
+
+  onUnload() {
+    // 页面卸载时清除定时器
+    clearInterval(this.countdownTimer);
+  }
+
+});