うるう秒 と JavaScript の Date.parse
うるう秒を Date.parse 関数に与えるとどうなるのか?
の3パターンで調べました。
| Browser | type | "Thu Dec 31 23:59:60 GMT 1998" | "2012-07-01T08:59:60Z" | "2012-07-01T08:59:59Z" |
| Android Browser (OS 2.3.4) | v8 | -283996860000 | NaN (※) | NaN (※) |
| Chrome for Android (OS 4.0.1) | v8 | -283996860000 | NaN | 1341133199000 |
| Chrome dev (Windows 7) | v8 | -283996860000 | NaN | 1341133199000 |
| Chrome for iOS (iOS 5.1.1) | JavaScriptCore | NaN | 1341133200000 | 1341133199000 |
| node.js 0.6.17 (Windows 7) | v8 | -283996860000 | NaN | 1341133199000 |
| Mobile Safari (iOS 5.1.1) | JavaScriptCore | NaN | 1341133200000 | 1341133199000 |
| Safari (Windows 7) | JavaScriptCore | NaN | 1341133200000 | 1341133199000 |
| IE 10 PP2 (Windows 7) | IE | NaN | NaN | 1341133199000 |
| IE 9 (Windows 7) | IE | NaN | NaN | 1341133199000 |
| IE 8 emu (Windows 7) | IE | NaN | NaN (※) | NaN (※) |
| IE 7 emu (Windows 7) | IE | NaN | NaN (※) | NaN (※) |
| Firefox for Android(OS 2.3.4) | Gecko | 915148800000 | NaN | 1341133199000 |
| Firefox 13.0.1 (Windows 7) | Gecko | 915148800000 | NaN | 1341133199000 |
| Opera 12 (Windows 7) | Opera | 915148800000 | NaN | 1341133199000 |
※ Date.parse が UTC Date String を解釈できないため NaN を返しています
(ε・◇・)з Chrome for iOS の中身は JavaScriptCore との事です
