正则练习笔记

 //g:全局搜索；i：忽略大小写；m：多行执行。
		//let re = /^\d{3}\-\d{3,8}$/;    //字面量：
		//let re = new RegExp('^\d{3}\-\d{3,8}$');  //正则表达式实例化
		//let a = re.test("010-1234567x")

//切分字符串
		//let b = "a,b;c,   d";
		//let c = b.split(' ');
		//let d = b.split(/\s+/);      //a,b;c,,d
		//let e = b.split(/[\s\,]+/);  //a,b;c,d
		//let f = b.split(/[\s\,\;]+/);  //a,b,c,d

//分组
        //let g = /^(\d{3})-(\d{3,8})$/;
        //let h = g.exec("001-12345678");
        //alert(h);
        //let i = /^(0[0-9]|1[0-9]|2[0-3])\:(0[0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9]|5[0-9])\:(0[0-9]|1[0-9]|2[0-9]|3[0-9]|4[0-9]|5[0-9])$/;
        //let j = i.exec("21:04:58");       //21:04:58,21,04,58
        //alert(j);
//贪婪模式
       //let k = /^(\d+)(0*)$/;
       //let l = k.exec("102300"); //102300,102300
       //alert(l);
//非贪婪模式
       //let m = /^(\d+?)(0*)$/;
       //let n = m.exec("102300");  //102300,1023,00
       //alert(n);

//全局搜索
       let o = /[a-zA-Z]+Script/;
       let p = 'JavaScript,VBScript,JScScript';
       let q = o.exec(p);
       alert(q);            //JavaScript
       let r = o.lastIndex;
       alert(r);