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我正在使用DirtyForms和$.blockUI插件，后者在单击链接时更改页面（在我的应用程序中，某些页面需要几秒钟才能加载，并且视觉反馈很好）。

当我更改字段内容然后单击任何链接时，会触发 DirtyForms：但是当我取消停留在页面上的过程时，$.blockUI开始其游戏，导致页面卡住

$('form[method="post"]').dirtyForms();
$('a').on('click', function(){
	$.blockUI();
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.dirtyforms/2.0.0/jquery.dirtyforms.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.blockUI/2.70/jquery.blockUI.min.js"></script>

<p>Change the field content to activate DirtyForms, then click on the link.<br>
When the popup appears, click on "cancel" to stay on the page.<br>
Watch blockUI getting fired as the link is going to be followed</p>
<form action="#" method="post">
  <input type="text" name="username" required>
  <button type="submit">send</button>
</form>
<a href="https://google.com">click me after changing field content</a>

请问，有什么解决办法吗？

编辑：我也尝试了stay.dirtyforms和afterstay.dirtyforms事件，但它们没有效果。defer.dirtyforms似乎有效，但事件被触发了两次（我放了一个console.log()检查），我不确定这是要走的路......

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1 回答 1

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我已经编辑了我的答案：我添加了一些代码行来首先禁用onbeforeunload对话框警报，取自此处。最后，您可以尝试另一个想法的答案链接。

我的想法：您必须阻止默认链接操作并使用 $.blockUI Modal Dialogs 方法打开自定义对话框，然后href从链接中捕获链接属性将其放入变量中并使用#yes对话框按钮的变量值.

看看这个解决方案能否满足您的需求

/* beforeunload bind and unbind taken from https://gist.github.com/woss/3c2296d9e67e9b91292d */

// call this to restore 'onbeforeunload'
var windowReloadBind = function(message) {
  window.onbeforeunload = function(event) {
    if (message.length === 0) {
       message = '';
    };
  
    if (typeof event == 'undefined') {
       event = window.event;
    };
    if (event) {
       event.returnValue = message;
    };
    return message;
  }
};

// call this to prevent 'onbeforeunload' dialog
var windowReloadUnBind = function() {
    window.onbeforeunload = function() {
      return null;
   };
};

var linkToFollow; // href to follow

$('form[method="post"]').dirtyForms();

$('a').on('click', function(e){
        e.preventDefault();
        windowReloadUnBind(); // prevent dialog
	$.blockUI({ message: $('#question'), css: { width: '275px' } });
        linkToFollow = $(this).attr('href');
});

$('#no').click(function() { 
        $.unblockUI();
        return false; 
});

$('#yes').click(function() { 
        $(window.location).attr('href', linkToFollow); 
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.dirtyforms/2.0.0/jquery.dirtyforms.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.blockUI/2.70/jquery.blockUI.min.js"></script>

<p>Change the field content to activate DirtyForms, then click on the link.<br>
When the popup appears, click on "cancel" to stay on the page.<br>
Watch blockUI getting fired as the link is going to be followed</p>
<form action="#" method="post">
  <input type="text" name="username" required>
  <button type="submit">send</button>
</form>
<a href="https://google.com" class="link">click me after changing field content</a>
<div id="question" style="display:none; cursor: default"> 
    <h6>Would you like to contine?.</h6> 
    <input type="button" id="yes" value="Yes" /> 
    <input type="button" id="no" value="No" /> 
</div>

从另一个答案中获得的其他想法：其他想法是jQuery.ajax({})在返回值之前进行一个简单的调用，beforeunload 如本答案所示

于 2018-06-11T14:59:25.953 回答