.与[\s\S]的区别

 

.不会匹配\r\n

 [\s\S] 匹配任意字符

 

 

 

let str = `

`

let reg1 = /./g

let reg2 = /[\s\S]/g

const r1 = reg1.test(str)

console.log(r1); // false

const r2 = reg2.test(str)

console.log(r2); // true