Question

我有以下脚本

脚本

$('#test1').click(function () {

    // Here are the two dates to compare
    var date1 = '29-10-2015';
    var date2 = '29-12-2015';
    var Targetvalue = parseFloat("1000000");
    var dealjson = '[{"dealdate":"25-12-2015","cost":200000},{"dealdate":"25-11-2015","cost":200000}]';

    // First we split the values to arrays date1[0] is the year, [1] the month and [2] the day
    date1 = date1.split('-');
    date2 = date2.split('-');

    // Now we convert the array to a Date object, which has several helpful methods
    date1 = new Date(date1[2], date1[1] - 1, date1[0]);
    date2 = new Date(date2[2], date2[1] - 1, date2[0]);
    var deals = JSON.parse(dealjson);
    var achieved = 0;

    while (date1 <= date2) {
        var next_day = new Date(date1);
        next_day.setDate(date1.getDate() + 1);
        achieved = 0;
        deals.forEach(function (deal) {
            var dealDate = deal.dealdate;
            dealDate = dealDate.split('-');
            dealDate = new Date(dealDate[2], dealDate[1] - 1, dealDate[0]);

            if (dealDate === date1) console.log("matched" + date);
        });

        date1 = next_day;
    }

});

我正在尝试登录控制台，如果循环中的日期都与Json数组dealjson中的日期匹配，尽管我有两个日期介于date1和date 2之间，但仍然没有发生匹配

if (dealDate === date1) console.log("matched" + date);

以下是FIDDLE

任何人都可以帮我解决错误

Answer 1

要在JavaScript中检查两个相等的日期，您必须获得自1970年1月1日00:00:00 UTC以来的＆＃34; 毫秒数＆＃34;并比较这些值。

要获取此号码，请使用日期getTime()方法：

if (dealDate.getTime() === date1.getTime()) console.log("matched" + date);

查看更新的JSFiddle demo。

Answer 2

当您使用==或===来比较Date个实例时，相同的Date实例才会出现这种情况，而不是等效的 Date个实例。

要查看它们是否完全相同，请使用+或getTime()：

if (+dealDate === +date1)
// or
if (dealDate.getTime() === date1.getTime())

这不是您的其他日期关系<=的问题，因为<=强制其对基元的参数。如果双方都是对象，则==和===不会这样做。

Answer 3

您需要将日期放在时间戳中。

var dc1=new Date(dealDate).getTime();
var dc2=new Date(date1).getTime();

 if(dc1===dc2) console.log("matched"+date1);

＆＃13;

$('#test1').click(function () {

    // Here are the two dates to compare
    var date1 = '29-10-2015';
    var date2 = '29-12-2015';
    var Targetvalue = parseFloat("1000000");
   var dealjson = '[{"dealdate":"25-12-2015","cost":200000},{"dealdate":"25-11-2015","cost":200000}]';

    // First we split the values to arrays date1[0] is the year, [1] the month and [2] the day
    date1 = date1.split('-');
    date2 = date2.split('-');
    
    // Now we convert the array to a Date object, which has several helpful methods
    date1 = new Date(date1[2], date1[1]-1, date1[0]);
    date2 = new Date(date2[2], date2[1]-1, date2[0]);
    var deals = JSON.parse(dealjson);
    var achieved = 0;

              while (date1 <= date2) {
                  var next_day = new Date(date1);
                  next_day.setDate(date1.getDate() + 1);
                  achieved = 0;
                  deals.forEach(function (deal) {
                      var dealDate = deal.dealdate;
                      dealDate = dealDate.split('-');
                      dealDate = new Date(dealDate[2], dealDate[1]-1, dealDate[0]);
                   
                      
                     var dc1=new Date(dealDate).getTime();
                     var dc2=new Date(date1).getTime();
                      
                      if(dc1==dc2){
                          console.log("matched"+date1);
                          $(".varianceData").text("matched"+date1);
                     }
                      
                     
                  });
     
              date1 = next_day;
    }

});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<button id="test1">See the Tab Day </button>
<div class="varianceData"></div>

＆＃13;

尝试匹配JavaScript

3 个答案: