js-date.md

   1 ---
   2 title: JavaScript Date
   3 category: JavaScript
   4 layout: 2017/sheet
   5 weight: -3
   6 ---
   7
   8 ## Date
   9 {: .-left-reference}
  10
  11 ### Constructor
  12
  13 ```js
  14 // Now
  15 new Date()
  16 ```
  17
  18 ```js
  19 // ms since epoch
  20 new Date(1419785527580)
  21 ```
  22
  23 ```js
  24 // Date format
  25 new Date("May 17, 1995 03:24:00")
  26 ```
  27
  28 ```js
  29 // ISO date format
  30 new Date("2013-03-01T01:10:00")
  31 ```
  32
  33 ```js
  34 new Date(2014, 2, 1, 13, 0, 59, 0)
  35 ```
  36
  37 ### Constructor
  38
  39 | `new Date(` | `2014,` | `2,`  | `1,` | `13,` | `0,` | `59,` | `0)`  |
  40 | Date        | Year    | Month | Day  | Hour  | Min  | Sec   | Milli |
  41 {: .-css-breakdown}
  42
  43 Months are zero-indexed (eg, January is `0`).
  44
  45 ### Conversion
  46
  47 | Method                   | Result                                      |
  48 | ---                      | ---                                         |
  49 | `d.toString()`           | `"Mon Dec 29 2014 00:58:28 GMT+0800 (PHT)"` |
  50 | `d.toTimeString()`       | `"00:58:46 GMT+0800 (PHT)"`                 |
  51 | `d.toUTCString()`        | `"Sun, 28 Dec 2014 16:58:59 GMT"`           |
  52 | ---                      | ---                                         |
  53 | `d.toDateString()`       | `"Thu Jan 10 2013"`                         |
  54 | `d.toISOString()`        | `"2013-01-09T16:00:00.000Z"`                |
  55 | `d.toLocaleString()`     | `"12/29/2014, 12:57:31 AM"`                 |
  56 | `d.toLocaleTimeString()` | `"12:57:31 AM"`                             |
  57 | ---                      | ---                                         |
  58 | `d.getTime()`            | `1419785527580`                             |
  59
  60 Accessing
  61 ---------
  62
  63 ### Getters
  64
  65 | Method                 | Result            |
  66 | ---                    | ---               |
  67 | `.getDate()`           | `1..31`           |
  68 | `.getDay()`            | `0..6` (sun..sat) |
  69 | `.getFullYear()`       | `2014`            |
  70 | `.getMonth()`          | `0..11`           |
  71 | ---                    | ---               |
  72 | `.getHours()`          |                   |
  73 | `.getMinutes()`        |                   |
  74 | `.getSeconds()`        |                   |
  75 | `.getMilliseconds()`   |                   |
  76 | ---                    | ---               |
  77 | `.getTime()`           | ms since epoch    |
  78 | `.getTimezoneOffset()` |                   |
  79
  80 UTC versions are also available (eg, `.getUTCDate()`, `.getUTCDay()`, etc).
  81
  82 ### Setters
  83
  84 | Method                       | Result |
  85 | ---                          | ---    |
  86 | `.setDate` _(val)_           |        |
  87 | `.setDay` _(val)_            |        |
  88 | `.setFullYear` _(val)_       |        |
  89 | `.setMonth` _(val)_          |        |
  90 | ---                          | ---    |
  91 | `.setHours` _(val)_          |        |
  92 | `.setMinutes` _(val)_        |        |
  93 | `.setSeconds` _(val)_        |        |
  94 | `.setMilliseconds` _(val)_   |        |
  95 | ---                          | ---    |
  96 | `.setTime` _(val)_           |        |
  97 | `.setTimezoneOffset` _(val)_ |        |
  98
  99 See the getters list.