1.只在函数中使用 2.返回的是实参的数组 <script> getNum(1, 2);//(2) [1, 2, callee: ƒ, Symbol(Symbol.iterator): ƒ] getNum(1, 2, 3);//(3) [1, 2, 3, callee: ƒ, Symbol(Symbol.iterator): ƒ] getNum(1, 2, 3, 4);//(4) [1, 2, 3, 4, callee: ƒ, Symbol(Symbol.iterator): ƒ] conso…