The snippet is detailing my problem. I have an object that stores an array of objects (some of which are arrays). When I push to these internal arrays, that value pushes to all of the elements in the array instead of just the index I'm looking for.
I feel like this should be a really easy fix - but I've tried everything. Switching to concat,push,putting things into for loops. When I run a simplified version in the snippet - (see snippet below) - then it says there's a "ref" to a certain ID. I'm not sure what this means, but my guess is that someone does know! any help would be great.
const runs = {
AC: {
L: Array(10).fill({
stim: [],
mask: [],
resp: [],
other: []
}),
R: Array(10).fill({
stim: [],
mask: [],
resp: [],
other: []
})
},
}
let runData = runs["AC"]["R"][3]
runData.stim.push(40)
console.log(runs.AC.R)You are filling the array with the same reference. Instead, fill the array with empty items, then map to insert the object:
runs = {
AC: {
L: Array(10).fill().map(e=>({
stim: [],
mask: [],
resp: [],
other: []
})),
R: Array(10).fill().map(e=>({
stim: [],
mask: [],
resp: [],
other: []
}))
},
}
let runData = runs["AC"]["R"][3]
runData.stim.push(40)
console.log(runs.AC.R)