myDate = new Date();
myDate = new Date("December 19, 1983 03:24:00");
myDate = new Date(1983,11,19);
myDate = new Date(1983,11,17,3,24,0);
console.log(myDate);
var dateMilSecs = Date.now();
console.log(dateMilSecs);
var date = new Date();
dateMilSecs = date.getTime();
console.log(dateMilSecs);
var start = Date.now();
console.log(start);
var end = Date.now();
var elaspsed = end-start;
function calculateFuncRunTime(func){
var start = Date.now(),funcRtn = func(),end = Date.now();
console.log("函数运行的时间:"+(end-start)+"毫秒");
return funcRtn;
}
function hello(){
var rtn = 1;
for(var i in 1000000){
rtn +=i;
rtn /=2;
}
return rtn;
}
calculateFuncRunTime(hello);
function ISODateString(d){
function pad(n){ return n<10?'0'+n:n}
return d.getUTCFullYear()+'-'
+ pad(d.getUTCMonth()+1)+'-'
+ pad(d.getUTCDate())+'T'
+ pad(d.getUTCHours())+':'
+ pad(d.getUTCMinutes())+':'
+ pad(d.getUTCSeconds())+'Z'}
var d = new Date();
console.log(ISODateString(d));
console.log(Ext.Date.format(new Date(),'Y/m/d'));
console