So I have this problem that I don’t get. I make an array, then I make a second array that copies the first array but in reverse, and I make a third array that copies the second array. I change an element in the second array, but then when I console.log() every array to see the results, all of the arrays changed.
let arr = [["a",1],["b",2],["c",3],["d",4]];
let reverseArr = [...arr].reverse();
let tempReverseArr = [...reverseArr];
// let tempReverseArr = new Array([...reverseArr]);
reverseArr[0][1] = reverseArr[0][1] - 1;
console.log("reverseArr result: ",reverseArr);
console.log("");
console.log("tempReverseArr result: ",tempReverseArr);
console.log("");
console.log("arr result: ", arr);
Is there a way to make an array with the same elements of another array but not let it be affected by changes of the original array that was copied from?