Question

我有一个jquery对话框，它使用非jquery javascript函数来完成功能，具体取决于所选的按钮。我在对话框中添加了一个复选框，用户必须检查该复选框以表示对将要发生的事情的理解。

当我将检查状态的测试添加到非jquery javascript时，检查状态总是返回false。

以下是代码。前两个警报和return语句用于测试：

function acceptPitch()
{

    // the two alerts and return false are for testing only
    alert('jq=' + $('#understand').prop("checked"));
    alert('checkbox=' + document.getElementById('understand').checked);
    return false;
    if (document.getElementById('understand').checked)
    {
        handleUserDelay();
        $('#decision').val('yes');
        document.forms['cancellationForm'].submit();
        return true;
    }
    else
    {
        alert('[appropriate message here]');
        return false;
    }
}

如果该对话框中没有该复选框，则上述功能按预期工作。但是当它放在对话框中时，“checked”的测试总是返回false。

以下是对话框的主要代码：

var $dialog_cancel = $('#rh-dialog.cancel');
$dialog_cancel.dialog(
{
    autoOpen:false,
    width:500,
    modal:true,
    draggable:true,
    resizable:false
});

$('#reason').change(function()
{
    var reason1 = $(this).val().substr(0,1);
    if (reason1 == 'n')
    {
        $('#pitch').html($('#pitch-no').html());
        $('#acceptPitchButton').val($('#free-button-text').html());
    }
    else if (reason1 == 'y')
    {
        $('#pitch').html($('#pitch-yes').html());
        $('#acceptPitchButton').val($('#perp-button-text').html());
    }
    else
    {
        validCancelReason();
    }
});

$('#requestCancelButton').click(function()
{
    if (validCancelReason())
    {
        $dialog_cancel.dialog('open');
    }
});

以下是从“查看源”列表中获取的标记。请注意，jquery仅用于显示最后四个div中的两个，并且jquery进行了一些其他调整：

<div id="rh-dialog" class="cancel" title="Confirm Cancellation">
    <p>
        This will request cancellation of your continuing subscription service.<br />
    </p>
    <div id="pitch"></div>
    <p style="font-style: italic; margin-top:10px;">
        Please click <strong>YES!</strong> to continue your plan, or <strong>No, Thank You</strong> to cancel.
    </p>
    <div>
        <div id="rh-dialog-button-1">
            <input type="button" id="acceptPitchButton" value="Don't Cancel"  onclick="bar1.showBar(); acceptPitch();" />
        </div>
        <div id="rh-dialog-button-2">
            <input type="button" id="rejectPitchButton" value="No, Thank You, Just Cancel" onclick="bar1.showBar(); rejectPitch();" />
        </div>
    </div>
</div>
<div id="pitch-no" class="no-disp"><strong>GET ONE FREE MONTH!</strong><br />It is very important to us that all of our subscribers have success with our service, not only in speaking with reps but in actually growing your business. Given you are canceling because you were unsatisfied, we would like to offer you <strong>one FREE month.</strong><br /><br />To take advantage of this offer simply click <strong>Yes! Free Month</strong> and your credit card or PayPal account will not be charged for the next month.<br /><br />After your free month, you can choose to cancel your subscription or continue on with our Maintenance plan.<br/><br/><form id="agree-form"><input type="checkbox" id="understand"><strong>I understand</strong> that by requesting a free month I am not canceling my subscription, and that after the free month is over, my credit card or PayPal account will be charged for the next month of service and again every month thereafter until I do cancel.</input></form></div>
<div id="pitch-yes" class="no-disp"><strong>BARGAIN PRICE PERPETUITY PLAN!</strong><br />You realize that placing quality sales reps requires a continual effort trolling for reps at all times because timing is of the essense. For that reason, we would like to offer you our <strong>Perpetuity Plan</strong>.<br /><br />This plan is only USD $79/month, cancel anytime, and you can lock into that rate for life.<br /><br />Click <strong>Yes! Perpetuity Plan</strong> to switch to the Perpetuity Plan.</div>
<div id="free-button-text" class="no-disp">Yes! Free Month - Continue Subscription</div>
<div id="perp-button-text" class="no-disp">Yes! Perpetuity Plan</div>

另外，我正在添加一个屏幕截图：

screen shot showing dialog with checkbox http://www.oofdah.com/wp-content/uploads/2012/04/Screen-Shot-2012-04-27-at-4.38.13-PM.png

Answer 1

请尝试以下操作（假设您的$dialog_cancel位于全局范围内）

if ($('#understand', $dialog_cancel).is(':checked'))
{
    // code
}

而不是

if (document.getElementById('understand').checked)
{
    // code
}

Answer 2

我已采用上述评论中提到的潜在解决方案作为解决方案。该解决方案改编自jQuery UI Dialog with ASP.NET button postback。

基本上我从其他问题中使用的方法如下：

dlg.parent().appendTo(jQuery("form:first"));

在我的情况下，我通过在定义对话框后添加此jQuery语句来调整该方法：

$dialog_cancel.parent().appendTo($('#cancellationForm'));

在声明出现之后，jQuery和普通的javascript方法都能正常工作。也就是说，可以使用以下两个语句中的任何一个：

alert('jq=' + $('#understand').prop("checked"));
alert('checkbox=' + document.getElementById('understand').checked);

使用这种方法后，由于DOM的更改，我不得不稍微调整样式，因为DOM更改会应用样式。

使用jquery对话框中的复选框

2 个答案: