var timestamp = (new Date()).getTime();
console.log(timestamp);//打印當(dāng)前時間戳
console.log(timestamp-24*60*60*1000);//當(dāng)前時間戳(毫秒) - 1天毫秒數(shù) = 前一天時間戳
var timestamp = (new Date()).getTime();
console.log(timestamp);//打印當(dāng)前時間戳
console.log(timestamp-24*60*60*1000);//當(dāng)前時間戳(毫秒) - 1天毫秒數(shù) = 前一天時間戳