如何停止将事件从父div传播到子div

Question

我想在我的html中停止从父级div传播到子div的事件。这是一个简单的代码，我正在尝试做什么：

<div>
  <div id='categoryList'>
    <div class='listed-category'>
      <span>some content</span>
      <a id='close'>x</a> //"a" is used to remove the div
    </div>
  </div>
</div>
<div id='dropdown'>
</div>

在上面的代码中，如果我点击<div id='categoryList'>，<div id='dropdown'>将按照下面的代码向上和向下滑动。

$(document).ready(function () {

    $('#categoryList').click(function (event) {
        event.preventDefault();
        event.stopPropagation();
        if ($('#dropdown').is(":visible")) {
            $('#dropdown').slideUp(400);
        }
        else {
            $('#dropdown').slideDown(400);
        }
    });
})

但是当我点击孩子<div class='listed-category'>时，上面的JavaScript执行并且<div id='dropdown'>上下滑动。怎么阻止这个？然而，我希望能够点击<a id='close'>去除孩子div

Answer 1

检查匹配点击对象的目标。在click事件处理程序的开头尝试此代码。

if( event.target !== this ) {
       return;
}
//...do stuff.. 

Answer 2

你需要停止在孩子，而不是父母传播，所以你应该写这个：

 $('.listed-category').click(function(event){
    event.stopPropagation();
});

如果你想点击a标签并停止传播，你还需要写这个：

 $('a#close').click(function(event){
    event.stopPropagation();
});

无论如何，我会建议Yuriy的答案。我只是想让你知道你应该把event.stopPropagation()放在孩子们身上（如果你不想让父母的事件运行），而不是父母。

Answer 3

而不是使用e.stopPropagation，我建议你在div <div class='listed-category'>中使用unbind（）方法，如此...

$('.listed-category').unbind('click');

这将允许停止.listed-category div的传播效果。方法e.stopPropagation()不起作用，因为它只适用于父元素而不适用于子元素。

你总是可以创建一个新函数并在之后分配给.listed-category div。你也可以在这个链接上查看unbind()方法的文档：http://api.jquery.com/unbind/

我希望有所帮助！

Answer 4

http://codepen.io/rakeshcode/pen/KrZdNo

$(document).ready(function(){
  $(".arrow").click(function(){
  $(".row").slideToggle();
  
  });

$(".btn").click(function(event){
   event.stopPropagation();
  //$(".btn").attr("href","www.yahoo.com")
});
})

.btn {
  display: block;
  padding:15px;
  background-color:green;
  width:100px;
  margin-top:15px;
  text-decoration:none;
  margin-left:auto;
  margin-right:auto;
  
  
  
}
.arrow {
  cursor:pointer;
  text-align: center;
  padding:10px 0;
  font-size:15px;
  font-weight:bold;
  background-color:grey;
  margin-top:15px;
}
.container {
  max-width:600px;
  margin-left:auto;
  margin-right:auto; 
}
.close {
  height:75px;
  overflow:hidden;
  transition-duration: 0.3s;  
  transition-timing-function: cubic-bezier(0, 1, 0.5, 1);
}
.open {
  height:215px;
  overflow: hidden;
  transition-property:height;
  -moz-transition-duration: 0.3s;
    -webkit-transition-duration: 0.3s;
    -o-transition-duration: 0.3s;
    transition-duration: 0.3s;  
  transition-timing-function: ease-in;
}
.up {
  background-color:red; 
}
.down {
  background-color:green;
}

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