Find character in an array calculator jQuery

1

If I have an array from the calculator input like this [9, 8, 7, 6, 5, "+", "-", 9, 8]

How to find the character in an array and take only the last character that the user clicks? In this array it will take only "-" and the array will be [9, 8, 7, 6, 5, "-", 9, 8]

I think I can use pop() to take the last character.

My code:

  ["plus", "minus", "devide", "multiply"].map(op => {
    let selector = "#" + op;

    $(selector).on("click", function(e) {
      result.push(e.currentTarget.innerText);
      // console.log(result);
      // $("#input").html(operator);
      // let newValue = result.concat(operator);
      if (operator.length >= 1) {
        let newOperator = operator.pop();
        console.log("newOperator" + newOperator);
        // result.push(newOperator);
        // return operator;
        $("#input").html(result);
      }
      $("#input").html(result);
    });
  });