Question

我有两个日期，其中一个是dd-mm-yyyy hh:mm格式，另一个是dd-mm-yyyy (D1)格式我将dd-mm-yyyy hh:mm格式日期拆分为仅dd-mm-yyyy (D2)格式然后我比较日期D2和D1，如

var D1 = new Date(); 
var D2 = new Date(); 
// D1 = 03-05-2014  this date take as an example
// D2 = 28-04-2014 00:00  this date take as an example
// D1 and D2 are taken by input fields.
    split the D2 date

dat = D2.split(' ');
D2 = dat[0];
//finally D2 is 28-04-2014
if(D2<=D1)
{
  echo "ok";
}
else{
  echo "something is wrong";
}

我总是得到其他部分，这是因为我将日期从28-04-2014 00:00分割为28-04-2014吗？

Answer 1

dateFirst = D1.split('-');
dateSecond = D2.split('-');
var value = new Date(dateFirst[2], dateFirst[1], dateFirst[0]); //Year, Month, Date
var current = new Date(dateSecond[2], dateSecond[1], dateSecond[0]);

而不是使用if条件

if(D2<=D1)
{
console.log('ok');
}
else
{
console.log('something is wrong');
}

Answer 2

这实际上是你需要的

var D1 = "03-05-2014";
var D2 = "28-04-2014 00:00";

if ((new Date(D1).getTime()) >= (new Date(D2).getTime())) {
    alert('correct');
} else {
    alert('wrong');
}

WORKING DEMO

Answer 3

这是您正在进行的字符串比较，而不是日期比较

就字符串来说...... 2大于0 ......这就是为什么你总是会遇到错误的问题＆＃34;声明

编辑：这是对错误的解释 //创建日期变量 var D1 = new Date（）;

// Creates another date variable
var D2 = new Date();

// Converts this date variable into a string
D1 = 03-05-2014 

// This is too is converted into a string
D2 = 28-04-2014 00:00

    dat = D2.split(' ');
D2 = dat[0];

//finally D2 is 28-04-2014  <-- true, but it is a string
if(D2<=D1){    //   <-- At this point you are doing a string comparison

        echo "ok";

} else {

    echo "something is wrong";

}

编辑：这是一种可行的解决方案。。。

而不是那样做，

var D1 = new Date();
var D2 = new Date();

if(D2.getTime() <= D1.getTime()){
    echo "ok";
} else {
    echo "something is wrong";
}

编辑：如果您是从输入字段获取，请执行此操作

// Make sure you dates are in the format YYYY-MM-DD.
    // In other words, 28-04-2014 00:00 becomes 2014-04-28 00:00
// Javascript Date only accepts the ISO format by default
var D1 = new Date( $('#input1#').val() );
var D2 = new Date( $('#input2#').val() );

    if(D2.getTime() <= D1.getTime()){
    echo "ok";
} else {
    echo "something is wrong";
}

Answer 4

尝试：

var msg = new Date("03-05-2014").getTime() >= new Date("28-04-2014 00:00").getTime() ? 'Correct' : 'Wrong';
alert(msg);

Answer 5

var now = new Date();
var end = new Date(//some other date hear);
if(now>end)
{
     console.log('now=',now);
}
else
{
    console.log('end=',end);
}

Answer 6

您可以将日期比较为最简单易懂的方式。

<input type="date" id="getdate1" />   //with time include
<input type="date" id="getdate2" /> // without time include

首先编写一个通用的方法来解析日期方法。

    <script type="text/javascript">
                function parseDate(input) {   
                  var parts = input.split(' ');
              var datecomp=parts[0];  // will get 
              var timecomp=parts[1];  // will get time
                  var dparts=datecomp.split('-');
             if(timecomp!=undefined && timecomp!=null){ //if there is like
                             var tparts=timecomp.split(':');
     return new Date(dparts[2], dparts[1]-1, dparts[0], tparts[0], tparts[1]); 


 }else{  // for when no time is givin
    return new Date(dparts[2], dparts[1]-1, dparts[0]); 
                                              }
                                             return "";
                                              }
            </script>

在这里你可以调用上面的方法

<script type="text/javascript">

              $(document).ready(function(){
              //parseDate(pass in this method date);
                    Var Date1=parseDate($("#getdate1").val());
                        Var Date2=parseDate($("#getdate2").val());
               //use any oe < or > or = as per ur requirment 
               if(Date1 = Date2){
         return false;  //or your code {}
}
 });
    </script>

只需使用parseDate方法并比较任何类型的日期。

Answer 7

将它们转换为毫秒，然后进行比较

使用javascript比较两个日期

7 个答案: