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showing results for - "javascript function to add or remove from array if"
Antoine
10 Oct 2019
1function removeItemOnce(arr, value) {
2  var index = arr.indexOf(value);
3  if (index > -1) {
4    arr.splice(index, 1);
5  }
6  return arr;
7}
8
9function removeItemAll(arr, value) {
10  var i = 0;
11  while (i < arr.length) {
12    if (arr[i] === value) {
13      arr.splice(i, 1);
14    } else {
15      ++i;
16    }
17  }
18  return arr;
19}
20//Usage
21console.log(removeItemOnce([2,5,9,1,5,8,5], 5))
22console.log(removeItemAll([2,5,9,1,5,8,5], 5))
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