日期验证 [英] Validation for Date

问题描述

我有一个Web应用程序，在此我必须验证格式如mm / dd / yyyy的一个日期字段。我在网上搜索，但我没有得到正确的。请通过提供新功能或通过更正我的代码来帮助我。我的代码如下所示。我在onblur事件中调用了这个JS函数。

  function isValidDate（）{
 
 var re = new RegExp（'^（0 [1-9] | [12] [0-9] | 3 [01]）/（0 [1-9] | 1 [012]）/ （19 | 20）dd $'）; 
 
 if（form1.txtDateOfOccurance.value！=''&&form !txtDateOfOccurance.value.match（re））{
 alert（Invalid date format：+ form1 .txtDateOfOccurance.value）; 
 form1.txtDateOfOccurance.value =; 
 form1.txtDateOfOccurance.focus（）; 
 isEnable（）; 
返回false; 
} 
  

}

感谢提前..

解决方案

我只是尝试将字符串解析为Date对象，并检查结果（假设只有需要知道是否有效的日期）：

  var myDate = Date.parse（form1.txtDateOfOccurance.value）; 
 if（isNaN（myDate））{
 //它不是一个真实的日期
} 
  

I have one web application, in this i have to validate one date field of format like mm/dd/yyyy. I searched in the net but i didn't get the proper one. Please help me by providing the new function or by correcting on my code. My code is shown below.. I had called this JS function at onblur event..

function isValidDate() {

var re = new RegExp('^(0[1-9]|[12][0-9]|3[01])/(0[1-9]|1[012])/(19|20)dd$');

if (form1.txtDateOfOccurance.value != '' && !form1.txtDateOfOccurance.value.match(re)) {
    alert("Invalid date format: " + form1.txtDateOfOccurance.value);
    form1.txtDateOfOccurance.value = "";
    form1.txtDateOfOccurance.focus();
    isEnable();
    return false;
}

}

Thanks in advance..

解决方案

I'd just try parsing the string as a Date object and check the result (assuming you only need to know if it's a valid date or not):

var myDate = Date.parse(form1.txtDateOfOccurance.value);
if(isNaN(myDate)){ 
    // it's not a real date
}

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