.map 给数组对象添加新属性

let menuList = [

{name:'晓明',age:18},

{name:'黎明',age:20},

{name:'德华',age:28},

]

const list = this.list.map((item) => ({
    ...item,
    title: `新属性1`,
    productName: '新属性2',
    income: '新属性3'
}))

//