JavaScript事件冒泡事件对象的相关内容

文章 2022-05-09 来自：开发者社区

学习javaScript必知必会(4)~事件、事件绑定、取消事件冒泡、事件对象

1、常用的事件：① onload：页面加载② onblur：失去焦点 onfocus：获取焦点③ onclick：点击④ onmouseover：鼠标经过 onmouseout：鼠标离开⑤ onchange：内容改变⑥ onsubmit：表单提交2、绑定事件方式：（1）行内绑定：<元素事件="事件处理程序(函数)"> <script> function 函数名(){....

文章 2016-05-20 来自：开发者社区

JavaScript权威设计--事件冒泡，捕获，事件句柄，事件源，事件对象(简要学习笔记十八)

1.事件冒泡与事件捕获 2.事件与事件句柄 3.事件委托：利用事件的冒泡技术。子元素的事件最终会冒泡到父元素直到跟节点。事件监听会分析从子元素冒泡上来的事件。事件委托的好处： 1.每个函数都是对象，都会占用内存，内存中对象越多，性能越差。 2.必须事先指定所有事件处理程序而导致的DOM访问次数，会延迟整个页面的交互就绪时间。 ...

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