Toggle values into and out of an array in Javascript

Question

I want to have a simple array of values, ie

var simpleArray = [\"SE1\",\"SE2\",\"SE3\"];

I want to check this array when an action happens (a c

Answer 1

Also if the value is an object:

const eq = (a, b) => a == b

const toggle = (arr, item) => {
  const resultArray = [];
  let duplicate = false;
  for(let i = 0; i < arr.length; i++) {
    if(!eq(arr[i], item)) {
      resultArray.push(arr[i]);
    } else {
      duplicate = true
    }
  }
  if(!duplicate) {
    resultArray.push(item)
  }
  return resultArray;
}