Javascript有效日期检查在IE8（和Firefox）中不起作用 [英] Javascript Valid Date Checking does not work in IE8 (and Firefox)

问题描述

我在。

解决方案

感谢@mplungjan。我赞成了这个答案。

@mplungjan方法（首次提出）列在 http://jsfiddle.net/Lijo/uzSU6/7/ 。 IE8在一个场景中失败了 - http://jsfiddle.net/Lijo/uzSU6/12/ 。

所以我在引用如何验证日期？。请在此处查看 http://jsfiddle.net/Lijo/uzSU6/20/

编辑

请参阅 http://jsfiddle.net/uzSU6/37/ 处理空格的方案

请随意用这种方法提出建议/挑战。

参考文献

1. 检查是否存在空格而不使用trim


2. 在JavaScript比较中应该使用哪个等于运算符（== vs ===）？


3. 如何验证日期？

代码

  function isValidDate（s）
 {
 var bits = s.split（'/'）; 
 
 if（s.indexOf（''）！= -1）
 {
 //原始日期字符串中存在空格
返回false; 
} 
 
 // Javascript月份从零开始
 var d = new Date（bits [2]，bits [0]  -  1，bits [1]）; 
 
 
 if（isNaN（Number（bits [2]）））
 {
 //年份无效数字
返回false; 
} 
 
 if（Number（bits [2]）< 1）
 {
 //年份应大于零
返回false; 
} 
 
 
 
 // 1。检查年份是否为
 // 2。检查日期部分是否与原始日期组件相同
 // 3。检查d是否有效
 
 return d&& （（d.getMonth（）+ 1）== bits [0]）&& （d.getDate（）== Number（bits [1]））; 
 
} 
  

I have tried two popular answers from Detecting an "invalid date" Date instance in JavaScript for checking valid dates. I tested both of them in IE8 – Unfortunately both are disappointing. See it here http://jsfiddle.net/Lijo/uzSU6/2/

Is there a better JavaScript code that will work in IE8 + Chrome + Firefox?

Note: To my surprise, it doesn't work well in Firefox too...

CONDITION

The date format is expected to be US date format with slashes (/)

CODE

isValidDateCheck2('12/33/2012') ;
isValidDateCheck1('12/12/2012') ;

function isValidDateCheck1(d) 
{
  alert(Object.prototype.toString.call(d));
  if ( Object.prototype.toString.call(d) !== "[object Date]" )
  {
    alert('Not Valid');
  }
  if(!isNaN(d.getTime()))
  {
  alert(d.getTime());
  }
  }

  function  isValidDateCheck2(d)
  {    
    var timestamp=Date.parse(d);
    alert(timestamp);

    if (isNaN(timestamp)==false)
    {
        var date=new Date(timestamp);
        alert(date);                    
    }
   }

EDIT

@mplungjan approach (first suggested) is listed in http://jsfiddle.net/Lijo/uzSU6/7/. This was failed in IE8 for one scenario - http://jsfiddle.net/Lijo/uzSU6/12/.

解决方案

Thanks to @mplungjan. I have upvoted that answer.

@mplungjan approach (first suggested) is listed in http://jsfiddle.net/Lijo/uzSU6/7/. This was failed in IE8 for one scenario - http://jsfiddle.net/Lijo/uzSU6/12/.

So I have used a slightly different approach after referring How to validate a date?. See it here http://jsfiddle.net/Lijo/uzSU6/20/

EDIT

Please refer http://jsfiddle.net/uzSU6/37/ for scenarios that handle blank spaces

Feel free to give your suggestions/ challenges with this approach.

References

1. Check whether white spaces exist without using trim
2. Which equals operator (== vs ===) should be used in JavaScript comparisons?
3. How to validate a date?

CODE

function isValidDate(s) 
{
var bits = s.split('/');

if(s.indexOf(' ') != -1)
{
    //White space exists in the original date string
    return false;
}

//Javascript month starts at zero
var d = new Date(bits[2], bits[0] - 1, bits[1]);


if ( isNaN( Number(bits[2]) ) ) 
{
    //Year is not valid number
    return false;
}

if ( Number(bits[2]) < 1 ) 
{
    //Year should be greater than zero
    return false;
}



//1. Check whether the year is a Number
//2. Check whether the date parts are eqaul to original date components
//3. Check whether d is valid

return d && ( (d.getMonth() + 1) == bits[0]) && (d.getDate() == Number(bits[1]) );

} 

​

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