被分组数据类型:包含n多个对象的数据
代码示例:
let data = [
{ key: 'xxx', name: 'yiyi', age: 12, money: 10 },
{ key: 'sss', name: 'iii', age: 13, money: 100 },
{ key: 'ddd', name: 'ooo', age: 13, money: 50 },
{ key: 'sss', name: 'mmm', age: 50, money: 90 },
{ key: 'ddd', name: '888', age: 13, money: 88 },
{ key: 'aaa', name: 'qqq', age: 30, money: 78 },
{ key: 'aaa', name: 'qqq', age: 13, money: 32 },
{ key: 'xxx', name: 'heh', age: 13, money: 95 },
{ key: 'sss', name: 'rtt', age: 15, money: 456 },
{ key: 'xxx', name: 'opp', age: 15, money: 91 },
{ key: 'ddd', name: 'gun', age: 19, money: 66 },
];
//data是要被分组的数据[],key是分组依据的关键字
let getGroup=(data,key)=>{
let groups={};
data.forEach(c=>{
let value=c[key];
groups[value]=groups[value]||[];
groups[value].push(c);
});
return groups;
}
console.log(getGroup(data,'key'))
调用这个getGroup方法得到的结果就是
{
aaa:[
{key: "aaa", name: "qqq", age: 30, money: 78},
{key: "aaa", name: "qqq", age: 13, money: 32}
],
ddd:[
{key: "ddd", name: "ooo", age: 13, money: 50},
{key: "ddd", name: "888", age: 13, money: 88},
{key: "ddd", name: "gun", age: 19, money: 66}
],
sss:[
{key: "sss", name: "iii", age: 13, money: 100},
{key: "sss", name: "mmm", age: 50, money: 90},
{key: "sss", name: "rtt", age: 15, money: 456}
],
xxx:[
{key: "xxx", name: "yiyi", age: 12, money: 10}
{key: "xxx", name: "heh", age: 13, money: 95}
{key: "xxx", name: "opp", age: 15, money: 91}
]
}