/
date.html
58 lines (53 loc) · 1.29 KB
/
date.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
<script>
let date= new Date();
alert(date);
let jan01_1990= new Date(0);
alert(jan01_1990);
let jan01_1994= new Date(24*3600*1000);
alert(jan01_1994);
alert(date.getTime());
alert(new Date(2014,0,1,0,0,0,0));
alert(new Date(2011,0,1));
let date= new Date();
alert(date.getHours());
alert(date.getMinutes());
alert(date.getUTCHours());
alert(date.getTime());
alert(new Date().getTimezoneOffset());
date.setHours(0);
alert(date);
date.setHours(0,0,0,0);
alert(date);
let date= new Date();
alert(date);
let date= new Date(2016,1,28);
date.setDate(date.getDate()+4);
alert(date);
let date= new Date();
date.setSeconds(date.getSeconds() + 84);
alert(date);
let start= new Date();
alert(date);
for(let i=0;i<1000000;i++){
let doSomething=i*i;
}
let end=new Date();
alert(`the loop tooks ${end-start}ms`);
alert(date.getTime());
let start= new Date();
for(let i=0;i<100000;i++){
dosomething=i*i;
}
let end=Date.now();//it returns current date
alert(`the loops tooks ${end-start}ms`);
let ms = Date.parse('2012-01-26T13:51:50.417-07:00');
alert(ms);
let date = new Date( Date.parse('2012-01-26T13:51:50.417-07:00') );
alert(date);
let date= new Date();
alert(date.getDay());
alert(date);
alert(date.now);
alert(date.getMonth());
alert(date.getYear());
</script>