JavaScript timestamps and date strings are converted to each other

<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<script type= "Text/javascript" >
Gets the current timestamp (in s)
var timestamp = date.parse (new Date ());
timestamp = timestamp/1000;
The current timestamp is: 1403149534
Console.log ("Current timestamp is:" + timestamp);

Gets the timestamp of a time format
var stringtime = "2014-07-10 10:21:12";
var timestamp2 = date.parse (new Date (StringTime));
TIMESTAMP2 = timestamp2/1000;
2014-07-10 10:21:12 Timestamp: 1404958872
Console.log (StringTime + "timestamp:" + timestamp2);

Change the current time to a time format string
var Timestamp3 = 1403058804;
var newdate = new Date ();
Newdate.settime (Timestamp3 * 1000);
Wed June 18 2014
Console.log (Newdate.todatestring ());
Wed, June 02:33:24 GMT
Console.log (Newdate.togmtstring ());
2014-06-18t02:33:24.000z
Console.log (Newdate.toisostring ());
2014-06-18t02:33:24.000z
Console.log (Newdate.tojson ());
June 18, 2014
Console.log (Newdate.tolocaledatestring ());
June 18, 2014 10:33:24
Console.log (Newdate.tolocalestring ());
10:33:24
Console.log (Newdate.tolocaletimestring ());
Wed June 10:33:24 gmt+0800 (China Standard Time)
Console.log (Newdate.tostring ());
10:33:24 gmt+0800 (China Standard Time)
Console.log (Newdate.totimestring ());
Wed, June 02:33:24 GMT
Console.log (Newdate.toutcstring ());

Date.prototype.format = function (format) {
var date = {
"m+": This.getmonth () + 1,
"D+": this.getdate (),
"H +": this.gethours (),
"m+": this.getminutes (),
"S+": This.getseconds (),
"q+": Math.floor ((This.getmonth () + 3)/3),
"S+": This.getmilliseconds ()
};
if (/(y+)/i.test (format)) {
Format = Format.replace (regexp.$1, (this.getfullyear () + "). substr (4-regexp.$1.length));
}
For (var k in date) {
if (New RegExp ("(" + K + ")"). Test (format)) {
Format = Format.replace (regexp.$1, regexp.$1.length = = 1
? Date[k]: ("XX" + date[k]). substr (("" + date[k]). length);
}
}
return format;
}
Console.log (Newdate.format (' Yyyy-mm-dd h:m:s '));

</script>

JavaScript timestamps and date strings are converted to each other