1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8" />
5 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
6 <title>new Date() 日期格式处理</title>
7 </head>
8 <body>
9 <script>
10 var myDate = new Date();
11
12 var y = myDate.getYear();
13 console.log("年份", y);
14 var fullYear = myDate.getFullYear();
15 console.log("完整年份", fullYear);
16 var m = myDate.getMonth() + 1;
17 console.log("月份", m);
18 var d = myDate.getDate();
19 console.log("日期", d);
20 var day = myDate.getDay();
21 console.log("星期", day);
22 var time = myDate.getTime();
23 console.log("获取当前时间(从1970.1.1开始的毫秒数)", time);
24 var h = myDate.getHours();
25 console.log("获取当前小时数(0-23)", h);
26 var min = myDate.getMinutes();
27 console.log("获取当前分钟数(0-59) ", min);
28 var sec = myDate.getSeconds();
29 console.log("获取当前秒数(0-59):", sec);
30 var haosec = myDate.getMilliseconds();
31 console.log("获取当前毫秒数(0-999)", haosec);
32 var riqi = myDate.toLocaleDateString();
33 console.log("获取当前日期 ", riqi);
34 var mytime = myDate.toLocaleTimeString();
35 console.log("获取当前时间", mytime);
36 var dt = myDate.toLocaleString();
37 console.log("获取当前日期和时间", dt);
38 </script>
39 <script>
40 //JS获取当前时间戳的方法-JavaScript 获取当前毫秒时间戳有以下三种方法：
41 var timestamp = Date.parse(new Date()); //不推荐
42 console.log(timestamp);
43
44 var timestamp2 = new Date().valueOf();
45 console.log(timestamp2);
46
47 var timestamp3 = new Date().getTime();
48 console.log(timestamp3);
49
50 var ti = new Date();
51 console.log(ti); // Mon Nov 23 2020 15:17:09 GMT+0800 (中国标准时间)
52 </script>
53 <script>
54 var strTime = "2011-11-23";
55 var da = strTime.replace(/-/g, "/");
56 console.log(da); //2011/11/23
57 var date = new Date(Date.parse(strTime.replace(/-/g, "/")));
58 console.log("字符串日期格式:", date);
59 </script>
60
61 <script>
62 function add0(m) {
63 return m < 10 ? "0" + m : m;
64 }
65 function format(shijianchuo) {
66 //shijianchuo是整数，否则要parseInt转换
67 var time = new Date(shijianchuo);
68 var y = time.getFullYear();
69 var m = time.getMonth() + 1;
70 var d = time.getDate();
71 var h = time.getHours();
72 var mm = time.getMinutes();
73 var s = time.getSeconds();
74 return (
75 y +
76 "-" +
77 add0(m) +
78 "-" +
79 add0(d) +
80 " " +
81 add0(h) +
82 ":" +
83 add0(mm) +
84 ":" +
85 add0(s)
86 );
87 }
88 console.log("时间戳转为日期格式1:", format(1606118452913)); //2020-11-23 16:00:52
89
90 var oldTime = new Date("2015/06/23 08:00:20").getTime() / 1000;
91 var oldTime2 = new Date("1997/01/01 08:00:20").getTime() / 1000;
92 console.log("时间戳转为日期格式2", oldTime); //1435017620
93 console.log("时间戳转为日期格式2", oldTime2); //852076820
94 </script>
95
96 <script>
97 var parserDate = function (date) {
98 var t = Date.parse(date);
99 if (!isNaN(t)) {
100 return new Date(Date.parse(date.replace(/-/g, "/")));
101 } else {
102 return new Date();
103 }
104 };
105 console.log(
106 "如何将2015-03-12 12:00 转换成标准时间:",
107 parserDate("2015-03-19 12:00:00")
108 );
109
110 var time1 = "2016-01-01 17:22:37";
111 var date = new Date(time1.replace(/-/g, "/")); //开始时间
112 var time2 = date.getTime();
113 console.log("时间格式字符串转为时间戳（毫秒）:", time2);
114 </script>
115 </body>
116 </html>
