bjLiuqaq的博客

let a = ""let b = ""let c = ""let key = a?b?c?1:2:3:4等同于if(a){    if(b){          if(c){                key = 1          }else{                key = 2          }      }else{        key = 3    }}else{ ...

let arr = [        {         name: 'jay',         age: 18        },        {         name: 'jay'2,         age: 0         },] let  _sort = (key）{     return (a,b)=>{      ...