我有这个带有一些对象的数组，
var arr = [
{type: "motorbike", model: "ducati monster 797", quantity: 2},
{type: "car", model: "audi", quantity: 4},
{type: "truck", model: "ford", quantity: 1},
{type: "car", model: "bmw", quantity: 1},
{type: "bicycle", model: "giant", quantity: 3},
{type: "truck", model: "MAN", quantity: 1},
{type: "car", model: "dodge 2012", quantity: 3}
]
我如何通过每个对象的“类型”属性对对象进行分组以获得这种格式：
var arr2 = [
{
type: 'motorbike',
data: [{model: "ducati monster 797", quantity: 2}]
},
{
type: 'car',
data: [
{model: "audi", quantity: 4},
{model: "bmw", quantity: 1},
{model: 'dodge 2012', quantity: 3},
]
},
{
type: 'truck',
data: [
{model: "ford", quantity: 1},
{model: "MAN", quantity: 1}
]
}
];
您可以使用.reduce(),.map()并Object.entries()获得所需的输出：
const data = [
{type: "motorbike", model: "ducati monster 797", quantity: 2},
{type: "car", model: "audi", quantity: 4},
{type: "truck", model: "ford", quantity: 1},
{type: "car", model: "bmw", quantity: 1},
{type: "bicycle", model: "giant", quantity: 3},
{type: "truck", model: "MAN", quantity: 1},
{type: "car", model: "dodge 2012", quantity: 3}
];
const result = Object.entries(data.reduce((r, {type, ...rest}) => {
r[type] = r[type] || [];
r[type].push(rest);
return r;
}, {})).map(([type, data]) => ({type, data}));
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }本文收集自互联网，转载请注明来源。
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