模块七：web开发进阶笔记

1、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

    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

        多行匹配：
    默认就是多行匹配
    ^$