SOURCE

let a = [
    [
        {name:"美容护肤",value:"123"},
        {name:"电子数码",value:"200"},
        {name:"家具",value:"10"},
    ],
    [
        {name:"美容护肤",value:"70"},
        {name:"电子数码",value:"50"},
        {name:"家具",value:"20"},
    ],
    [
        {name:"美容护肤",value:"65"},
        {name:"电子数码",value:"150"},
        {name:"家具",value:"45"},
    ]
]

let b = {}
a.map((aitem)=>{
    aitem.map(item=>{
        if(b[item.name]){
            b[item.name].push(item.value)
        }else{
            b[item.name] = []
        }
    })
})

console.log(b)
let c = Object.keys(b).map(key=>{
    return {
        name:key,
        value:b[key]
    }
})

console.log(c)