change array index position in javascript by up and down click
// move up by 1 postion in Array
const moveUp=(id)=> {
let index = arr.findIndex(e => e.id == id);
if (index > 0) {
let el = arr[index];
arr[index] = arr[index - 1];
arr[index - 1] = el;
}
}
// move dwon by 1 postion in Array
const moveDown=(id)=> {
let index = arr.findIndex(e => e.id == id);
if (index !== -1 && index < arr.length - 1) {
let el = arr[index];
arr[index] = arr[index + 1];
arr[index + 1] = el;
}
}