learning about arrays, trying to implement postfix conversion to result

Question

I have the following postfix to convert:

outputArray = [3,4,*,2,9,3,/,4,/,6]

Wanted result is slicedArray = [3, * , 4 ] so I can perform arithmetic operation.

This was my approach which did fail for some reason...

let outputArray = ['3','4','*','2','9','3','/','4','/','6']

outputArray.forEach((element) => {
  while ((
      element !== '*' ||
      element !== '+' ||
      element !== '-' ||
      element !== '/' ||
      element !== '^'
    )) {
    resultArray.push(outputArray.shift(element));
    console.log("Hi Panda " + resultArray)
  }

  if (element.includes("+") ||
    element.includes("-") ||
    element.includes("*") ||
    element.includes("/") ||
    element.includes("^")) {
    let panda = resultArray.length;
    resultArray.splice(panda - 1, 0, element)
    let slicedArray = resultArray.slice(-3)
    console.log(slicedArray);
  }
})