前端学习：javascript正则表达式及前端组件

//匹配测试结果
        pattern = /\d+/
        pattern.test("asfdasd123232fdsaf")
        true
        pattern.test("asfdasdfdsaf")
        false
        pattern = /^\d+$/
        pattern.test("asfdasd123232fdsaf")
        false
        pattern.exec("fsadfasd234dfasd")
        ["234"]
        pattern.exec("fsadfasd234dfasd23424")
        ["234"]
        分组匹配
            str = "javascript java javac fdsafsd"
            pattern = /java\w*/
            pattern.exec(str)
            ["javascript"]
            pattern = /java(\w*)/
            pattern.exec(str)
            ["javascript", "script"]
        //g全局匹配
            attern = /java(\w*)/g
            pattern.exec(str)
            ["javascript", "script"]
            pattern.exec(str)
            ["java", ""]
            pattern.exec(str)
            ["javac", "c"]
        //i 忽略大小写
        //m 多行匹配

验证：
    前端 js
    后端 python