javascript - 通过 javascript 进行日期验证

Question

请帮我解决我的问题。我在 javascript 中遇到了一个问题。我的问题是我必须使用日期验证。我有两个日期字段，我对两个日期字段都进行了验证，但问题是它在一个日期字段上工作，而不在另一个日期字段上工作。喜欢:

javascript代码

function ValidateDate(DateFrom,DateTo)
{
  var SDate = document.checkbookrequest.txtDateFrom.value;
  var EDate = document.checkbookrequest.txtDateTo.value;
//variables for date from.
//In dob1 i am taking the date which the user is giving 
//and split it into mm/dd/yyyy to compare with current date
    var dob1=document.checkbookrequest.txtDateFrom.value;
    var arr1 = dob1.split("/");
    var m1= arr1[0];
    var d1 = arr1[1];
    var y1 = arr1[2];
//variables for date from.
//In dob i am taking the date which the user is giving 
//and split it into mm/dd/yyyy to compare with current date
    var dob=document.checkbookrequest.txtDateTo.value;
    var arr = dob.split("/");
    var m= arr[0];
    var d = arr[1];
    var y = arr[2];

//these variable for checking the datefiels should not be blank
    var endDate = new Date(EDate);
    var startDate= new Date(SDate);

    if(SDate != '' && EDate != '' && startDate > endDate)
    {

      alert(" Date To must be greater than or equal to Date From.");
      document.checkbookrequest.txtDateTo.value = "";
      document.checkbookrequest.txtDateTo.focus();
      return false;
    }
    else if(SDate == '')
    {
      alert("Please enter Date From");
      document.checkbookrequest.txtDateFrom.focus();
      return false;
    }
    else if(EDate == '')
    {
      alert("Please enter Date To");
      document.checkbookrequest.txtDateTo.focus();
      return false;
    }

//this is to chck the from date
    else if (EDate != "")
    {
      currentdate = new Date();
      a=currentdate.getMonth()+1;
      b=currentdate.getDate();
      c=currentdate.getFullYear();
      if((d==b)&&(m==a)&&(y==c))
    {
      alert('Please Enter valid Date Of Birth');
      return false;
    }
      else if ((d>b)&&(m==a)&&(y==c))
    {
      alert('Please Enter valid Date Of Birth');
      return false;
    }
    else if (y<=c-100)
    {
      alert('Please Enter valid Date Of Birth');
      return false;
    }
    else{
      document.checkbookrequest.cmd.value='btnSearch';
      document.checkbookrequest.submit();
    }
 }

//this is to chck the to date
    else if (SDate != "")
    {
      currentdate = new Date();
      a=currentdate.getMonth()+1;
      b=currentdate.getDate();
      c=currentdate.getFullYear();
      if((d1==b)&&(m1==a)&&(y1==c))
      {
        alert('Please Enter valid Date Of Birth in DateFrom');
        return false;
      }
      else if ((d1>b)&&(m1==a)&&(y1==c))
      {
        alert('Please Enter valid Date Of Birth in DateFrom');
        return false;
      }
      else if (y1<=c-100)
      {
        alert('Please Enter valid Date Of Birth in DateFrom');
        return false;
      }
      else{
       document.checkbookrequest.cmd.value='btnSearch';
       document.checkbookrequest.submit();
      }
    }


    else{
      document.checkbookrequest.cmd.value='btnSearch';
      document.checkbookrequest.submit();
    }        
  }

html代码

<td>Date From:<font color="red">*</font></td>
<td><input type="text" name="txtDateFrom" ></td>

<td>Date To:<font color="red">*</font></td>
<td><input type="text" name="txtDateTo"> </td>

<input type="button" name="btnSearch" value="Search" onclick="return ValidateDate(txtDateFrom,txtDateTo)" /></td>

如果我将“dateto”验证放在上面，那么它就可以工作，但如果我将它放在日期验证之后，那么日期开始就可以工作，而日期就不能工作

这有什么问题吗？请帮我...提前致谢

Answer 1

我建议您完全放弃这条路，并通过使用无法输入无效数据的控件来减轻您的头痛。你为什么不使用 jQuery calendar用于输入。有了两个有效日期，您的验证代码现在将仅限于检查结束日期是否早于开始日期