遇到2个面试题.

2012-10-20

碰到2个面试题......恩等会回答下....1 Event delegation2 Cross Browser Scripting a. What is browser

碰到2个面试题......
恩等会回答下....

1 Event delegation

2 Cross Browser Scripting a. What is browser detection? What is feature detection? Which one is preferred?