arr1: [
{ a: 1, b: 2 },
{ a: 3, b: 4 }
],
arr2: [
{ c: 5, d: 6 },
{ c: 7, d: 8 }
]
要求写成
[
{a: 1, b: 2, c: 5, d: 6},
{a: 1, b: 2, c: 7, d: 8},
{a: 3, b: 4, c: 5, d: 6},
{a: 3, b: 4, c: 7, d: 8},
]
methods:{
cartesianProduct(arr) {
return arr.reduce((a, b) => a.map(x => b.map(y => x.concat(y))).reduce((a, b) => a.concat(b), []), [[]]).map(item => item.reduce((a, b) => { return { ...a, ...b } }, {}))
},
getDatas(){
this.cartesianProduct([this.arr1, this.arr2])
}
}
单数组交叉合并
function cartesianProduct(arr) { return arr.reduce((a, b) => a.map(x => b.map(y => x.concat(y))).reduce((a, b) => a.concat(b), []), [[]])}
使用
this.cartesianProduct([[1, 2, 3], ['a', 'b'], ['c']])
