解析日期字符串在特定區域設置（不是時區！）

Question

使用MomentJS，如有必要，我可以使用.locale（或舊版本中的.lang）在特定時刻（而不是全局）設置區域設置。我怎樣才能解析一個字符串使用全球之外的特定地區？由於moment函數本身就是我們用來解析的東西，而且似乎沒有完全解析的.set變體？

例如爲：

// Assume the default locale is 'en' (just in case, I'll set it for the snippet) 
 
moment.locale('en'); 
 

 
// I have this string that's in the French locale 
 
var str = "30 Avril 2015"; 
 

 
// Parsing it fails 
 
var m = moment(str, "DD MMMM YYYY"); 
 
snippet.log(m.format("YYYY-MM-DD")); // "Invalid Date"

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment-with-locales.js"></script> 
 
<!-- Script provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 --> 
 
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>

Answer 1

作爲2.0.0版本，區域設置密鑰可以作爲第三個參數被傳遞給moment()和moment.utc()

// Assume the default locale is 'en' (just in case, I'll set it for the snippet) 
 
moment.locale('en'); 
 

 
// I have this string that's in the French locale 
 
var str = "30 Avril 2015"; 
 

 
// Parse it in 'fr' 
 
var m = moment(str, "DD MMMM YYYY", "fr"); 
 

 
// Check result: 
 
snippet.log(m.format("YYYY-MM-DD -- MMMM")); 
 

 
// Check global locale 
 
var locale = moment()._locale._abbr; 
 
snippet.log('Locale : ' + locale);

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment-with-locales.js"></script> 
 
<!-- Script provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 --> 
 
<script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>