一、图片

在这里插入图片描述

二、代码

let heads = [
    {name: '姓名1', 'age': '年龄1'},
    {name: '姓名2', 'age': '年龄2'},
];

let middle = [
    {name: '姓名3', 'age': '年龄3'},
];

let foot = {name: '姓名4', 'age': '年龄4'};

//连接heads，middle
let result = heads.concat(middle);

//push追加foot
result.push(foot);

console.log(result);