摘要:
1 let {keys, values, entries} = Object 2 let a = { 3 "b":'1', 4 "c":'2', 5 "d":'3' 6 } 7 for (let s of keys(a)) { 8 // b c d 9 console.log(s) 10 } 11 阅读全文
摘要:
1 // 扩展运算符(...) 2 let a = [1,2,3,4] 3 let b = [5,6,7,8] 4 let c = [9,10,11,12] 5 let d = '1'+'2'+'3' 6 // 将数组转为一个参数序列 7 console.log(...a) 8 // 将b添加在a的 阅读全文