來自 HTML 的輸入值未傳遞到模態

Question

我正在嘗試將預訂 ID 從 HTML 傳遞給模態。 在圖片中，當我單擊預訂旁邊的“取消”時：屏幕預覽出現一個模式，它應該包含預訂的 id 號：預覽

彈出模式但沒有預訂 ID 號。 請問，怎么了？

我遵循了本教程： https://www.geeksforgeeks.org/how-to-pass-data-into-a-bootstrap-modal/ 。 謝謝你。

這是我的代碼：

{% extends "layout.html" %}

{% block title %}
    Index
{% endblock %}

{% block main %}
<p>
    <h3>Welcome {{ firstname }}</h3>
</p>

<table class="table table-striped">
    <thead>
        <tr>
            <th>Seat</th>
            <th>Start date</th>
            <th>End date</th>
            <th>Number of days</th>
            <th>Action</th>

        </tr>
    </thead>

    <tbody>

        {% for histor in history %}

            <tr>
                <td>{{ histor.seat_name }}</td>
                <td>{{ histor.start_date}}</td>
                <td>{{ histor.end_date }}</td>
                <td>{{ numberofdays }}</td>
                <td>
                    <form action="/" method="post">
                        <input tupe="text" class="form-control"  id="idtocancel" name="idtocancel" autocomplete="on" selected placeholder={{ histor.booking_id }}>
                        <button type="button" id="submit" class="btn btn-success tocancel"  data-toggle="modal" data-target="#exampleModal">Cancel {{ histor.booking_id}}</button>
                    </form> 

                </td>
            </tr>
        {% endfor %}

    </tbody>

</table>

<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
    <div class="modal-content">
    <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Do you really wish to cancel this booking?</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
        <span aria-hidden="true">&times;</span>
        </button>
    </div>
    <div class="modal-body">
        <h6 id="modal_body"></h6>

    </div>
    <div class="modal-footer">

        <button type="button" class="btn btn-secondary" data-dismiss="modal">No, go back</button>
        
        <input class="form-control"  name="bookId" id="bookId"  autocomplete="on" selected>
        <button type="button" id="submit" class="btn btn-success" data-toggle="modal" data-target="#exampleModal">Yes, cancel the booking</button>
    </div>
    </div>
</div>
</div>

<!--JavaScript queries-->


<script type="text/javascript"> 
 
        $("#submit").click(function () {
            var name = $("#idtocancel").val();
            $("#modal_body").html( name);
        }); 

</script> 



{% endblock %}

Answer 1

您將{{ histor.booking_id }}的值分配給占位符，而不是使用value="{{ histor.booking_id }}" 。然后，使用 class 進行點擊事件，並在此獲取輸入值，使用$(this).prev().val()並將其放在您的模態中。

演示代碼：

 $(".tocancel").click(function() { var name = $(this).prev().val(); //use prev $("#modal_body").html(name); $("#bookId").val(name); //use val here });

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script> <table class="table table-striped"> <thead> <tr> <th>Seat</th> <th>Start date</th> <th>End date</th> <th>Number of days</th> <th>Action</th> </tr> </thead> <tbody> <tr> <td>A</td> <td>2-10-1</td> <td>10-1-10</td> <td>5</td> <td> <form action="/" method="post"> <.--added value="{{ histor.booking_id }}"--> <input type="text" class="form-control" name="idtocancel" autocomplete="on" selected placeholder={{ histor.booking_id }} value="1"> <button type="button" class="btn btn-success tocancel" data-toggle="modal" data-target="#exampleModal">Cancel 1</button> </form> </td> </tr> <tr> <td>B</td> <td>2-10-1</td> <td>10-1-11</td> <td>5</td> <td> <form action="/" method="post"> <input type="text" class="form-control" name="idtocancel" autocomplete="on" selected placeholder={{ histor?booking_id }} value="2"> <button type="button" class="btn btn-success tocancel" data-toggle="modal" data-target="#exampleModal">Cancel 2</button> </form> </td> </tr> </tbody> </table> <;-- Modal --> <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <h5 class="modal-title" id="exampleModalLabel">Do you really wish to cancel this booking,</h5> <button type="button" class="close" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">&times,</span> </button> </div> <div class="modal-body"> <h6 id="modal_body"></h6> </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">No, go back</button> <input class="form-control" name="bookId" id="bookId" autocomplete="on" selected> <button type="button" id="submit" class="btn btn-success" data-toggle="modal" data-target="#exampleModal">Yes, cancel the booking</button> </div> </div> </div> </div>