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change array index position in javascript by up and down click

Neemesh answered on July 31, 2020 Popularity 6/10 Helpfulness 4/10

answer change array index position in javascript by up and down click

change array index position in javascript by up and down click

Comment

// 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;
  }
}

Popularity 6/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: click javascript position

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