// 微信小程序睡眠X秒sleep(numberMillis) { var now = new Date(); var exitTime = now.getTime() + numberMillis; while (true) { now = new Date(); if (now.getTime() > exitTime) {return;}} },

// 微信小程序睡眠X秒
this.sleep(2000);

参考：微信小程序睡眠函数_微信小程序编写睡眠功能-CSDN博客