有没有一种方法可以使用Moment JS验证时间? [英] Is there a way to validate time using Moment JS?

问题描述

是否有一种方法可以验证使用Moment JS作为时间传递的字符串是否有效?

Is there a way to validate if the String passed as time is valid using Moment JS?

操作moment("2014-12-13 asdasd","YYYY-MM-DD LT").isValid()或moment("asdasd","LT").isValid()等同于true，理想情况下不应发生.

The operations moment("2014-12-13 asdasd","YYYY-MM-DD LT").isValid() or moment("asdasd","LT").isValid() equate to true which ideally shouldn't happen.

我的应用程序使用多种语言，对于我来说，真的不可能提出RegEx模式来验证字符串.例如，如果我将时间字符串设为"午前12時12分0秒"，则Moment JS应该能够对此进行验证.我检查了源，发现库中的时间检查不是那么严格.我可能错过了一些东西.请帮忙.

My application uses multiple languages and it is really not possible for me to come up with a RegEx pattern to validate the string. For example, if I get the time string as "午前12時12分0秒", Moment JS should be able to validate this. I checked the source and found that time checking is not that strict in the library. I might have missed something. Please help.

推荐答案

如在文档中，从2.3.0版开始，您可以传递第三个参数true，它打开严格解析"模式.

As described in the documentation, as of moment 2.3.0, you can pass a third parameter true which turns on "strict parsing" mode.

moment("2014-12-13 asdasd","YYYY-MM-DD LT", true).isValid()   // false

moment("2014-12-13 12:34 PM","YYYY-MM-DD LT", true).isValid()   // true

缺点是它必须完全匹配语言环境的格式(即作为第二个参数提供的语言环境)完全.由于LT在英语中等同于h:mm A，因此它将仅接受12个小时的时间，而没有秒.如果您经过24小时或秒，那么它将失败.

The down side is that it must match the locale's format (i.e. the one supplied as the second argument) exactly. Since LT is equivalent to h:mm A in English, it will only accept 12-hour time without seconds. If you pass 24 hour time, or pass seconds, then it will fail.

moment("2014-12-13 12:34:00 PM","YYYY-MM-DD LT", true).isValid()   // false
moment("2014-12-13 15:00","YYYY-MM-DD LT", true).isValid()         // false

更好的解决方案可能是通过严格的解析传递多种格式:

A better solution might be to pass multiple formats with strict parsing:

var formats = ["YYYY-MM-DD LT","YYYY-MM-DD h:mm:ss A","YYYY-MM-DD HH:mm:ss","YYYY-MM-DD HH:mm"];
moment("2014-12-13 12:34 PM", formats, true).isValid()     // true
moment("2014-12-13 15:00", formats, true).isValid()        // true
moment("2014-12-13 12:34:00 PM", formats, true).isValid()  // true

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