I defined the following function:
const func = ()=>{
let a = new Array(2).fill().map(i => new Array(2).fill(1));
console.log(`%o`,a);
a[0][0]++;
return a;
}
When I implement func() in DevTools, the result is this:
(2) [Array(2), Array(2)]
0: (2) [2, 1]
1: (2) [1, 1]
length: 2
__proto__: Array(0)
(2) [Array(2), Array(2)]
0: (2) [2, 1]
1: (2) [1, 1]
length: 2
__proto__: Array(0)
I want the first one of
console.log(`%o`,a);
to be
[[1,1],[1,1]]
but the result was unexpected.
Why does this happen? Is this an example of hoisting?
Any information would be appreciated.
