摘要： let arr1 = [ {name: 1} ] let arr2 = [ {age: 23} ] let ages = [11, 22, 23] let newArr = arr1.concat(arr2) 1. concat() 用于连接两个或多个数组, 该方法不会改变现有的数组, 而仅仅会返回 阅读全文