在JavaScript中减少对象数组

Question

I have an array of 100 indices

const randomArr = [...Array(100).keys()]

How to return 100 array like this

[{index: i}, {title: `title${i}`}] 

where i should be index of random array.

Answer 1

Use Array.from() :

 const result = Array.from({ length: 100 }, (_, i) => [ { index: i }, { title: `title${i}` } ]); console.log(result); 

Answer 2

I think you mean that you want a list like

[{index: i, title: `title${i}`}]

But here goes anyway.

Using Array.prototype.fill

 const randomArr = Array(100).fill(0).map((e, i) => [{ index: i}, {title: `title${i}`}] ); console.log(randomArr);