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I was trying to initialize a simple two dimensional array as follows: const arrays = Array(3).fill([]); However, when I tried to push an entry into one of the arrays, it seems like it gets push...
#2: Post edited
by
Moshi
·
2022-03-11T05:31:27Z (over 2 years ago)
fixed typo
- I was trying to initialize a simple two dimensional array as follows:
- ```javascript
- const arrays = Array(3).fill([]);
- ```
- However, when I tried to push an entry into one of the arrays, it seems like it gets pushed to all of them for some reason:
- ```javascript
array[0].push('foo');console.log(array); // [ [ 'foo' ], [ 'foo' ], [ 'foo' ] ]- ```
- Why is this happening, and what can I do to fix it?
- I was trying to initialize a simple two dimensional array as follows:
- ```javascript
- const arrays = Array(3).fill([]);
- ```
- However, when I tried to push an entry into one of the arrays, it seems like it gets pushed to all of them for some reason:
- ```javascript
- arrays[0].push('foo');
- console.log(arrays); // [ [ 'foo' ], [ 'foo' ], [ 'foo' ] ]
- ```
- Why is this happening, and what can I do to fix it?
#1: Initial revision
by
Moshi
·
2022-03-11T05:24:32Z (over 2 years ago)
Why does pushing to one array affect all the arrays in my two-dimensional array?
I was trying to initialize a simple two dimensional array as follows:
```javascript
const arrays = Array(3).fill([]);
```
However, when I tried to push an entry into one of the arrays, it seems like it gets pushed to all of them for some reason:
```javascript
array[0].push('foo');
console.log(array); // [ [ 'foo' ], [ 'foo' ], [ 'foo' ] ]
```
Why is this happening, and what can I do to fix it?