Date.js parseExact()作为数组传入时不解析4位数字的年份 [英] Date.js parseExact() not parsing 4 digit years when passed in as an array

问题描述

我在date.js中缺少带有Date.parseExact()的东西吗?根据api文档，我应该能够做到这一点:

Am I missing something with Date.parseExact() in date.js? According to the api documentation, I should be able to do this:

Date.parseExact("10/15/2004", ["M/d/yyyy", "MMMM d, yyyy"]); // The Date of 15-Oct-2004

也就是说，我应该能够传递一个字符串数组，其中包含"...日期字符串的预期格式{String}或预期格式{Array}的数组."但是，当我这样做时:

That is, I should be able to pass in a string array which contains "...the expected format {String} or an array of expected formats {Array} of the date string." However, when I do this:

var d = Date.parseExact($(this).val(), ["MMddyy", "Mddyyyy", "MM/dd/yy","MM/dd/yyyy"])

对于包含4位数字年份的日期，我会返回空值(即，与MMddyyyyy和MM/dd/yyyy格式匹配).我是否缺少某些东西，或者这是Date.js中的错误?

I get back nulls for dates containing 4 digit years (that is, matching the MMddyyyy and MM/dd/yyyy formats). Am I missing something or is this a bug in Date.js?

以下是有关上下文的完整代码块:

Here is the complete block of code, for context:

$(function () {
     $('#FCSaleDate').change(function (e) {
         var d = Date.parseExact($(this).val(), ["MMddyy", "MMddyyyy", "MM/dd/yy","MM/dd/yyyy"])
         alert(d.toString("MM/dd/yyyy"));
     });

});

推荐答案

看来date.js试图将四位数的年份解析为两位数的年份，但失败，并在失败时返回null.

It appears date.js is attempting to parse the four-digit year as a two-digit year, failing, and returning null on failure.

为防止这种情况，请切换左右遮罩，以便它首先尝试使用四位数的遮罩:

To prevent this, switch your masks around so it tries the four-digit masks first:

$(function () {
     $('#FCSaleDate').change(function (e) {
         var d = Date.parseExact($(this).val(),["MMddyyyy","MMddyy","M/d/yyyy","M/d/yy"]);
         alert(d.toString("MM/dd/yyyy"));
     });

});

http://jsfiddle.net/mblase75/ttEqh/1/

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