Javascript事件冒泡 [英] Javascript Event Bubbling

问题描述

我有这个设置

<div onclick="SomeEvent">
    <input type=checkbox value=1>1
    <input type=checkbox value=2>2
    <input type=checkbox value=3>3
</div>

当用户点击复选框时我不希望SomeEvent被触发的问题。

The problem when the user click on the checkboxes I don't want the SomeEvent fired.

在某些情况下，我确实有一行

event.stopPropagation（）;

但似乎什么都不做。

In the some event I do have the line
"event.stopPropagation();"
but that seems to do nothing at all.

推荐答案

在事件冒泡模型中，事件传播来自内部元素到外部元素。

In the event bubbling model, the event propagation is from the inner elements to the outer elements.

这意味着 event.stopPropagation（）; 应该在输入'事件而不是div中。

This means that the event.stopPropagation(); should be in the inputs' events instead of the div.

<div onclick="SomeEvent">
  <input type=checkbox value=1 onclick="stopPropagation()">1
  <input type=checkbox value=2 onclick="stopPropagation()>2
  <input type=checkbox value=3 onclick="stopPropagation()>3
</div>

现在的Javascript代码：

Now the Javascript code:

function stopPropagation() {
  //... do something.
  //stop propagation:
  if (!e) var e = window.event;
  e.cancelBubble = true; //IE
  if (e.stopPropagation) e.stopPropagation(); //other browsers
}

更多信息：http://www.quirksmode.org/js/events_order.html

编辑：以上是显示冒泡模型如何工作的快速方法，但使用JQuery解决此问题的更好答案是：

EDIT: The above was a quick way to show how the bubbling model works, but a better answer to solve this problem using JQuery would be:

<div id="mydiv">
  <input type="checkbox" value="1" /> 1
  <input type="checkbox" value="2" /> 2
  <input type="checkbox" value="3" /> 3
</div>

现在的Javascript代码：

Now the Javascript code:

$('#mydiv').click(function(e) {
  //do something
});

$('#mydiv input').click(function(e) {
  //stop propagation:
  if (!e) var e = window.event;
  e.cancelBubble = true; //IE
  if (e.stopPropagation) e.stopPropagation(); //other browsers
});

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