js timestamp與datetime之間的相互轉換

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1.  datetime轉換成timestamp
strdate = "2015-08-09 08:01:36:789";var d = new Date(strdate);var timestamp=Math.round(d.getTime());document.write("timestamp: "+timestamp+"<br>");輸出：timestamp: 1439078496789
其它方法：var timestamp = Date.parse(strdate);或者var timestamp = d.valueOf();注意：strdate要加上毫秒，不然再轉換成datetime會丟失毫秒
2.  timestamp轉換成datetime

function timeStamp2String (time){        var datetime = new Date();         datetime.setTime(time);         var year = datetime.getFullYear();         var month = datetime.getMonth() + 1;         var date = datetime.getDate();         var hour = datetime.getHours();         var minute = datetime.getMinutes();         var second = datetime.getSeconds();         var mseconds = datetime.getMilliseconds();         return year + "-" + month + "-" + date+" "+hour+":"+minute+":"+second+"."+mseconds;};var time = "1439078496789"; //or time=1439018115000; 結果一樣var strdate2 = timeStamp2String(time);document.write("date: "+strdate2+"<br>");輸出：date: 2015-8-9 8:1:36.789

js timestamp與datetime之間的相互轉換