After researching this topic on multiple platforms including SO, I came across a solution in Eloquent JavaScript that caught my attention. Here is the code snippet that I experimented with:
function reversedArray(array) {
let reversedArray = [];
for (let i = 0; i <= array.length; i++) {
reversedArray.push(array[array.length - i]);
}
return reversedArray;
}
let arr = [
1,
2,
3,
4
];
console.log(arr);
console.log(reversedArray(arr));
The output of this code was unexpected as it showed:
> 1,2,3,4
> ,4,3,2,1
This indicates that the reversed array has one extra element than the original array. To fix this issue, I modified the code to remove the redundant first element from the reversed array:
function reversedArray(array) {
let reversedArray = [];
for (let i = 0; i <= array.length; i++) {
reversedArray.push(array[array.length - i]);
}
reversedArray.shift();
return reversedArray;
}
let arr = [
1,
2,
3,
4
];
console.log(arr);
console.log(reversedArray(arr));
Upon running this updated code, the output appeared exactly as intended:
> 1,2,3,4
> 4,3,2,1
As someone new to JS, I am puzzled by why the array length increases when using my initial function. Any insights on this matter would be highly appreciated. I want to understand the underlying concept rather than just fixing the issue. Thank you!