Javascript的日期是在iOS无效 [英] Javascript date is invalid on iOS

问题描述

我工作的一个PhoneGap的基础iOS应用程序，这是已经为Android做的。以下线路工作正常，为Android，但并不适用于iOS。为什么呢？

I'm working on a Phonegap-based iOS app, which is already done for Android. The following lines are working fine for Android but not for iOS. Why?

var d = new Date("2015-12-31 00:00:00");
console.log(d.getDate() + '. ' + d.getMonth() + ' ' + d.getFullYear();

结果为Android：

Result for Android:

31.11 2015

结果在iOS上：

Result on iOS:

NaN. NaN NaN

在哪里差哪里来的？

Where is the difference coming from?

推荐答案

您的日期字符串是不是在指定的格式与新日期工作。在规范的唯一格式是 ISO-8601的简化版本，但这只是添加ES5等支持可能的触摸而归。您的字符串不是这种格式，但它非常接近。

Your date string is not in a format specified to work with new Date. The only format in the spec is a simplified version of ISO-8601, but that was only added in ES5 and so support may be touch and go. Your string isn't in that format, but it's really close.

如果您更改空间为 T ，你会在规格：

If you change the space to a T, you'll be in spec:

var dateString = "2015-12-31 00:00:00";
var d = new Date(dateString.replace(' ', 'T'));

（我假设你没有真正使用一个字符串，因此替换电话。）

请注意，有是在ES5规范，它是在ES2015（ES6）更正一个错误：当有一个在字符串中没有时区的指标会发生什么。在ISO-8601，无指示的意思是本地时间，但ES5规范说，则默认为以Z （GMT）。他们固定在ES2015规范，但不幸的是一些JavaScript引擎遵循了ES5规范和其他人遵循ISO-8601（现在ES2015），因此对于固态跨浏览器支持，你需要包括一个时区的指标，否则你不知道它是否会PTED为GMT或当地时间间$ P $。你允许使用以Z 为GMT或 +/- 然后按 HH：MM 来GIE偏移。 （如 CST 缩写是不允许的，因为没有标准，它们。）

Note that there was an error in the ES5 specification which was corrected in ES2015 (ES6): What happens when there's no timezone indicator on the string. In ISO-8601, no indicator means "local time," but the ES5 specification said that it defaults to Z (GMT). They fixed it in the ES2015 specification, but unfortunately some JavaScript engines followed the ES5 specification and others followed ISO-8601 (and now ES2015), so for solid cross-browser support, you need to include a timezone indicator because otherwise you don't know whether it will be interpreted as GMT or local time. You're allowed to use Z for GMT or +/- followed by HH:MM to gie an offset. (Abbreviations like CST are not allowed, as there's no standard for them.)

如果他们不支持然而，即使它没有证件，还有附近的普遍支持YYYY / MM / DD HH：MM：SS 。所以：

If they don't support that yet, even though it's undocumented, there's near universal support for YYYY/MM/DD HH:MM:SS. So:

var dateString = "2015-12-31 00:00:00";
var d = new Date(dateString.replace(/-/g, '/'));

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