在jquery中比较两个文本框与日期时间值

Question

我有两个文本框，一个是到达，另一个是离开。例如，如果用户尝试输入。：

“2017-03-09”出发，到达日期“2017-03-10”，我希望出发值与到达相同。

由于某种原因，我的代码目前无法正常工作。

jQuery:

function onChange(sender, txt, departed) {
    var txtArrival = $("#txtArrivalDate");
    var txtArrivalDate = $(txtArrival).val(); //Value from arrival
    var txtDate = $(txt).val(); //Value from departed

    var departureDate = new Date(txtDate); //Converting string to date
    var arrivalDate = new Date(txtArrivalDate); //Converting string to date

    if (departureDate.getTime() < arrivalDate.getTime()) {
        txt.val = txtArrivalDate; //Does not work, value is not updated
    }
}

Answer 1

这样的？

 function onChange(sender, txt, departed) 
 {
    var txtArrival = $("#txtArrivalDate");
    var txtArrivalDate = $(txtArrival).val(); //Value from arrival
    var txtDate = $(txt).val(); //Value from departed
    
    var departureDate = new Date(txtDate); //Converting string to date
    var arrivalDate = new Date(txtArrivalDate); //Converting string to date

    

    if (departureDate.getTime() < arrivalDate.getTime()) {
         txt.val(txtArrivalDate); //Does not work, value is not updated
    }
}

$("#txtDepartureDate").change(function(event){
  onChange(event, $("#txtDepartureDate"));
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="date" id="txtArrivalDate" />
<input type="date" id="txtDepartureDate" />

Answer 2

是

$(txt).val(txtArrivalDate);

或

$(txt).html(txtArrivalDate);

而不是

txt.val = txtArrivalDate;

你想达到什么目的？