/** * Unix時(shí)間戳轉(zhuǎn)換為當(dāng)前時(shí)間多久之前 * @param timespan int     Unix時(shí)間戳 * @return timeSpanStr string   轉(zhuǎn)換之后的前臺(tái)需要的字符串 */function Ftime (timespan) {  var dateTime = new Date(timespan * 1000);  var year = dateTime.getFullYear();  var month = dateTime.getMonth() + 1;  var day = dateTime.getDate();  var hour = dateTime.getHours();  var minute = dateTime.getMinutes();  //當(dāng)前時(shí)間  var now = Date.parse(new Date()); //typescript轉(zhuǎn)換寫法  var milliseconds = 0;  var timeSpanStr;  //計(jì)算時(shí)間差  milliseconds = (now / 1000) - timespan;  //一分鐘以內(nèi)  if (milliseconds <= 60) {    timeSpanStr = '剛剛';  }  //大于一分鐘小于一小時(shí)  else if (60 < milliseconds && milliseconds <= 60 * 60) {    timeSpanStr = Math.ceil((milliseconds / (60))) + '分鐘前';  }  //大于一小時(shí)小于等于一天  else if (60 * 60 < milliseconds && milliseconds <= 60 * 60 * 24) {    timeSpanStr = Math.ceil(milliseconds / (60 * 60)) + '小時(shí)前';  }  //大于一天小于等于15天  else if (60 * 60 * 24 < milliseconds && milliseconds <= 60 * 60 * 24 * 30) {    timeSpanStr = Math.ceil(milliseconds / (60 * 60 * 24)) + '天前';  }  //大于一個(gè)月小于一年  else if (60 * 60 * 24 * 30 < milliseconds && milliseconds <= 60 * 60 * 24 * 30 * 12){    timeSpanStr = Math.ceil(milliseconds / (60 * 60 * 24 * 30)) + '個(gè)月前';  }  //超過(guò)一年顯示  else {    timeSpanStr = year + '年' + month + '月' + day + '日 ' + hour + ':' + minute;    }  return timeSpanStr;}