js remove element from array

1//Remove specific value by index
2array.splice(index, 1);

1var colors = ["red","blue","car","green"];
2var carIndex = colors.indexOf("car");//get  "car" index
3//remove car from the colors array
4colors.splice(carIndex, 1); // colors = ["red","blue","green"]

1const array = [2, 5, 9];
2
3console.log(array);
4
5const index = array.indexOf(5);
6if (index > -1) {
7  array.splice(index, 1);
8}
9// array = [2, 9]
10console.log(array); 

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))

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))

1let arrDeletedItems = array.splice(start[, deleteCount[, item1[, item2[, ...]]]])