JS正则

test：判断字符串是否符合规定的正则

	rep = /\d+/;

	rep.test("asdfoiklfasdf89asdfasdf")

	# true

	rep = /^\d+$/;

	rep.test("asdfoiklfasdf89asdfasdf")

	# true

Script：获取匹配的数据

	rep = /\d+/;

	str = "wangshen_67_houyafa_20"

	rep.exec(str)

	# ["67"]

	JavaScript is more fun than Java or JavaBeans!

	var pattern = /\bJava(\w*)\b/;

	# ["JavaScript", "Script"]

	JavaScript is more fun than Java or JavaBeans!

	var pattern = /\bJava\w*\b/g;

	# ["JavaScript"]

	# ["Java"]

	# ["JavaBeans"]

	# null

	JavaScript is more fun than Java or JavaBeans!

	var pattern = /\bJava(\w*)\b/g;

	# ["JavaScript",'Script']

	# ["Java", ""]

	# ["JavaBeans", "Beans"]

	# null

JavaScript is more fun than Java or JavaBeans!

var pattern = /\bJava(\w*)\b/g;

这个会先打印出匹配到的字符串，如：JavaScript，并打印出（）匹配到的如：Script。

多行匹配：

默认就是多行匹配

	但是不能匹配第二行的^和$，使用m参数即可解决此问题，/.../m 表示多行匹配

标签事件执行顺序

	默认事件先执行：

		checkbox

	//先把checkbox的值变成true或false再执行自定义事件

	自定义先执行

		a

		submit

		...

	//这些都是自定义的事件先执行