问题描述
我有:
var dataCategories = [];
for(var i = 0,len = 3; i < len; i++) {
dataCategories.push({name: i,categories: [] })
}
console.log(dataCategories)
/* Result:
[{name: 0,categories: [] },{name: 1,{name: 2,categories: [] }]
*/
但是我需要类似以下的结果
[{name: 0,categories: [{
name: 1,categories: [{
name: 2,categories: []
}]
}]
}]
如何获得级联结果?
解决方法
考虑改用reduceRight
,在0到2的数组上进行迭代:
const arr = [0,1,2];
const output = arr.reduceRight(
(categories,name) => [{ name,categories }],[]
);
console.log(output);
或者,对于任意数字:
const length = 3;
const arr = Array.from({ length },(_,i) => i);
const output = arr.reduceRight(
(categories,[]
);
console.log(output);