javascript - 如果单击“确定”按钮，则在模式关闭后执行代码

Question

我正在使用 Bootstrap modal ，以及 javascript我正在这样做:

// When the button '#paramsOkay' inside '#exampleModal' is clicked..
$('#exampleModal').on('click','#paramsOkay', function (e) {
    ...
    $("#exampleModal").modal("hide");
});

// Executes, regardless of what the user clicked 'Okay' or 'Close'
$('#exampleModal').on('hidden.bs.modal', function() {
    alert("I was called");
});

单击“确定”按钮后，我会实现一些逻辑。当该逻辑完成后，我隐藏模式。当模式隐藏时(用户无法再看到它)，我希望调用另一个函数，但只有当用户单击“确定”时我才希望这样做。

如何使其仅在用户单击“确定”时才执行？

<小时/>

我的尝试:

$('#exampleModal').on('hidden.bs.modal', '#paramsOkay', function() {
    alert("I was called");
});

无论单击哪个按钮，都不会调用此函数，并且在控制台中也不会产生错误。

JSFiddle Demo .

// When the button '#paramsOkay' inside '#exampleModal' is clicked..
$('#exampleModal').on('click','#paramsOkay', function (e) {
    $("#exampleModal").modal("hide");
});

// Executes, regardless of what the user clicked 'Okay' or 'Close'
$('#exampleModal').on('hidden.bs.modal', function() {
    console.log("I was called 1");
});

// Doesn't get called regardless of which button is clicked
$('#exampleModal').on('hidden.bs.modal', '#paramsOkay', function() {
    console.log("I was called 2");
});

<!--------------------------- EXTERNAL BOILER PLATE STUFF -----------------------------> <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script><link rel="stylesheet" type="text/css" href="/css/result-light.css"><link rel="stylesheet" type="text/css" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap.css"><link rel="stylesheet" type="text/css" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap-responsive.css"><link rel="stylesheet" type="text/css" href="http://jschr.github.io/bootstrap-modal/css/bootstrap-modal.css"><script type="text/javascript" src="http://getbootstrap.com/2.3.2/assets/js/bootstrap.js"></script><script type="text/javascript" src="http://jschr.github.io/bootstrap-modal/js/bootstrap-modalmanager.js"></script><script type="text/javascript" src="http://jschr.github.io/bootstrap-modal/js/bootstrap-modal.js"></script>

<a id="newBtn" href="#" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">New</a>

<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">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&#215;</span></button>
                <h4 class="modal-title" id="exampleModalLabel">Input parameters</h4>
            </div>
            <div class="modal-body">
                <form>
                    <div class="form-group">
                        <label for="url-base" class="form-control-label">Base URL (optional):</label> 
                        <input type="text" class="form-control" id="url-base" placeholder="Example: https://www.merkel.com/obama?trump=15&amp;id=9616071454&amp;hilarry=es">
                    </div>
                    <div class="form-group">
                        <label for="max-pics" class="form-control-label">Max #pics:</label>
                        <input type="text" class="form-control" id="max-pics" placeholder="Default: 7">
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                <button id="paramsOkay" type="button" class="btn btn-primary">Okay</button>
            </div>
        </div>
    </div>
</div>

Answer 1

它不会执行，因为您委托(delegate)监听的按钮上永远不会触发“hidden.bs.modal”事件。

它不会在控制台中产生错误，因为那里没有任何内容会导致错误，您只是在监听不会发生的事件。

如果您希望在单击“确定”按钮后模式关闭后执行一些代码，则需要在单击事件监听器中绑定(bind)关闭事件监听器，如下所示:

var $modal = $('#exampleModal');
$modal.on('click', '#paramsOkay', function(e) {
    $modal.modal("hide");
    $modal.on("hidden.bs.modal", function() {
        console.log("Make me execute ONLY when Okay is clicked, please!");
    });
});

<!--------------------------- EXTERNAL BOILER PLATE STUFF -----------------------------> <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script><link rel="stylesheet" type="text/css" href="/css/result-light.css"><link rel="stylesheet" type="text/css" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap.css"><link rel="stylesheet" type="text/css" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap-responsive.css"><link rel="stylesheet" type="text/css" href="http://jschr.github.io/bootstrap-modal/css/bootstrap-modal.css"><script type="text/javascript" src="http://getbootstrap.com/2.3.2/assets/js/bootstrap.js"></script><script type="text/javascript" src="http://jschr.github.io/bootstrap-modal/js/bootstrap-modalmanager.js"></script><script type="text/javascript" src="http://jschr.github.io/bootstrap-modal/js/bootstrap-modal.js"></script>

<a id="newBtn" href="#" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">New</a>

<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">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&#215;</span></button>
                <h4 class="modal-title" id="exampleModalLabel">Input parameters</h4>
            </div>
            <div class="modal-body">
                <form>
                    <div class="form-group">
                        <label for="url-base" class="form-control-label">Base URL (optional):</label> 
                        <input type="text" class="form-control" id="url-base" placeholder="Example: https://www.merkel.com/obama?trump=15&amp;id=9616071454&amp;hilarry=es">
                    </div>
                    <div class="form-group">
                        <label for="max-pics" class="form-control-label">Max #pics:</label>
                        <input type="text" class="form-control" id="max-pics" placeholder="Default: 7">
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                <button id="paramsOkay" type="button" class="btn btn-primary">Okay</button>
            </div>
        </div>
    </div>
</div>