停止传播 jQuery 委托/实时功能不起作用

发布于 2024-09-14 19:21:42 字数 1052 浏览 8 评论 0原文

这是问题 html：

<ul id="update-list">
<li class="update" onclick="window.location('some_url')">
  <h2> some header </h2>
  <p> some paragraph </p>
  <div>
    <a class="popup-link">
      <span> Show Popup </span>
      <span> + </span>
    </a>
  </div>
</li> 
// this repeats n times
//...
</ul>

当我单击 .popup-link 链接时，它应该仅打开灯箱弹出窗口（确实如此），但 li 上的内联 onclick 也会触发。问题是 li 标签都是某些部分的一部分，这些部分是通过不同页面上的 ajax 获取的。因此，我使用 jQuery 的 delegate 来绑定事件，如下所示：

$('#update-list').delegate('.popup-link', 'click', function(e){
    // e.target is <span> while e.currentTarget is .popup-link 
    e.stopPropagation();
    //console.log(e.isPropagationStopped());  this shows 'true' in console
    $.popup();   // launch popup
    e.preventDefault(); // or return false
});

这似乎不起作用，内联 onclick 无论如何都会触发。我也尝试过 live() 但没有成功。我在这里缺少什么吗？

原文

Here's the problem html:

<ul id="update-list">
<li class="update" onclick="window.location('some_url')">
  <h2> some header </h2>
  <p> some paragraph </p>
  <div>
    <a class="popup-link">
      <span> Show Popup </span>
      <span> + </span>
    </a>
  </div>
</li> 
// this repeats n times
//...
</ul>

When I click on .popup-link link, it should open the lightbox popup only (which it does) but the inline onclick on li also fires. The thing is that the li tags are all part of some partial which is fetched via ajax on different pages. So I use jQuery's delegate to bind the events as follows:

$('#update-list').delegate('.popup-link', 'click', function(e){
    // e.target is <span> while e.currentTarget is .popup-link 
    e.stopPropagation();
    //console.log(e.isPropagationStopped());  this shows 'true' in console
    $.popup();   // launch popup
    e.preventDefault(); // or return false
});

This doesn't seem to work and the inline onclick fires anyway. I've tried with live() as well but no success. Is there something I am missing here?

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我很坚强 2024-09-21 19:21:43

据我所知，您无法通过停止附加事件处理程序内的冒泡来可靠地阻止内联事件处理程序触发。

此外，使用 live() 或 .delegate() 时，您不能使用 preventDefault() 或 stopPropagation()。您需要返回false以防止冒泡阶段和默认行为。

无论如何，正如我已经提到的，您无法阻止内联事件处理程序随之触发。

因此，要么创建完全不引人注目的（这是我强烈推荐的），要么删除代码中的内联点击处理程序。

示例：

$('#update-list').delegate('.popup-link', 'click', function(e){       
   $.popup();   // launch popup
   return false;
}).delegate('.update', 'click', function(){
   window.location('some_url');
})
// the rest of this is unnecessary if you can just omit the onclick attribute 
.find('.update')
  .removeAttr('onclick');

参考：.delegate()

AFAIK you cannot reliably prevent an inline event handler from firing by stopping the bubbling within an attached event handler.

Furthermore, using live() or .delegate() you cannot use preventDefault() nor stopPropagation(). You need to return false to prevent the bubble phase and the default behavior.

Anyway, as I already mention you can't prevent the inline event handler to fire with that.

So either, create it completely unobtrusive (which is what I highly recommend) or remove that inline click handler in code.

Example:

$('#update-list').delegate('.popup-link', 'click', function(e){       
   $.popup();   // launch popup
   return false;
}).delegate('.update', 'click', function(){
   window.location('some_url');
})
// the rest of this is unnecessary if you can just omit the onclick attribute 
.find('.update')
  .removeAttr('onclick');

Ref.: .delegate()

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魂牵梦绕锁你心扉 2024-09-21 19:21:43

 $('#update-list').delegate('.popup-link', 'click', function(e){       
  e.stopImmediatePropagation();
  e.preventDefault();
  // do something...
});

 $('#update-list').delegate('.popup-link', 'click', function(e){       
  e.stopImmediatePropagation();
  e.preventDefault();
  // do something...
});

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幼儿园老大 2024-09-21 19:21:43

你能试试这个吗？

$('#update-list').delegate('.popup-link', 'click', function(e){
    // e.target is <span> while e.currentTarget is .popup-link 
    e.stopPropagation();
    e.preventDefault(); // or return false

     // open popup in a timeout so that this function can return false
    window.setTimeout(function() {$.popup();}, 20);

    // for IE
    e.cancelBubble = true;
    return false;
});

Can you try this?

$('#update-list').delegate('.popup-link', 'click', function(e){
    // e.target is <span> while e.currentTarget is .popup-link 
    e.stopPropagation();
    e.preventDefault(); // or return false

     // open popup in a timeout so that this function can return false
    window.setTimeout(function() {$.popup();}, 20);

    // for IE
    e.cancelBubble = true;
    return false;
});

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