javascript - 何时调用“DOMNodeInserted”事件？

Question

DOMNodeInserted当节点“被附加到”或“被附加”时调用事件？

我问这个是因为以下代码：

function AddTextToContainer () {
    var textNode = document.createTextNode ("My text");
    var container = document.getElementById ("container");

    if (container.addEventListener) {
        container.addEventListener ('DOMNodeInserted', OnNodeInserted, false);
    }
    container.appendChild (textNode);
}

然后：

function AddTextToContainer () {
   var textNode = document.createTextNode ("My text");
   var container = document.getElementById ("container");

   if (textNode.addEventListener) {
       textNode.addEventListener ('DOMNodeInserted', OnNodeInserted, false);
   }
   container.appendChild (textNode);
}

两者都OnNodeInserted在 Chrome 中调用。它是一个错误吗？

Answer 1

这是来自W3C

DOMNodeInserted
Fired when a node has been added as a child of another node. 
This event is dispatched after the insertion has taken place. 
The target of this event is the node being inserted.
Bubbles: Yes
Cancelable: No
Context Info: relatedNode holds the parent node

关键是气泡：是的- 这就是为什么它也会在容器上发射。

Answer 2

如果你想防止事件冒泡，只需使用 event.stopPropagation(); 在您的文本节点回调中。然后不再在 dom 树上处理事件。