JavaScript: The Definitive Guide, Sixth Editio javaScript权威指南(第6版) pdf 文字版-文字版, javascript电子书, 和javascript 有关的电子书:

17.3.5 Invocation Order

It is important to understand that event handler return values are significant only for handlers registered as properties. We’ll see below that event handlers registered with addEventListener() or attachEvent() must instead call the preventDefault() method or set the returnValue property of the event object.


17.3.5 Invocation Order

A document element or other object may have more than one event handler registered for a particular type of event. When an appropriate event occurs, the browser must invoke all of the handlers, following these rules of invocation order:

欢迎转载,转载请注明来自一手册:http://yishouce.com/book/1/31460.html
友情链接It题库(ittiku.com)| 版权归yishouce.com所有| 友链等可联系 admin#yishouce.com|粤ICP备16001685号-1