TS 十三、正则表达式

 

let reg = /\d{4}-\d{7}/g;

let str = "1111-2222222";
let res = reg.exec(str);
console.log(res);
console.log(res.length);

res.forEach(function(value,index){
	console.log(index);
	console.log(value);
});

--->
[ '1111-2222222', index: 0, input: '1111-2222222', groups: undefined ]
1
0
1111-2222222