focusin专题
jQuery中focusin()和focus()、find()和children()的区别
jQuery中focus()和focusin()、focus()和children()的区别 focus()和focusin() focus()和focusin()的区别在于focusin()支持事件的冒泡，下面举例说明： <!doctype html><html lang="en"><head><meta charset="utf-8"><title>focusin demo</tit