使用JavaScript查看日期 [英] Check date in JavaScript

问题描述

我通过用户输入获取三个变量，其中包含日期，月份和日期的年份。我已经检查了月份var是否在1-12之间，所以。

I get three variables through a user input, that contain the year of a date, the month and the day. I've already checked if the month var is between 1–12 and so on.

现在我想检查一下它是否是真实的日期，而不是日期，

Now I want to check if it's a real date and not a date that doesn't exist like 31–06–2011.

我的第一个想法是创建一个新的Date实例：

My first idea was to make a new Date instance:

var year = 2011;
var month = 5; // five because the months start with 0 in JavaScript - June
var day = 31;
var myDate = new Date(2011,5,31);
console.log(myDate);

但是，MyDate不返回false，因为它不是有效的日期。相反，它返回'Fri Jul 01 2011 [...]'。

But myDate doesn't return false, because it's not a valid date. Instead it returns 'Fri Jul 01 2011 [...]'.

任何想法如何检查无效的日期？

Any ideas how I can check for an invalid date?

推荐答案

尝试这样：

if ((myDate.getMonth()+1!=month)||(myDate.getDate()!=day)||(myDate.getFullYear()!=year))
    alert("Date Invalid.");

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