knock1.js

function makeKnockCodeHandler(preset) {
  let input = [];
  return function knockCodeHandler(e) {
    input.push(getCode(e));
    if (input.length === preset.length) {
      if (input.join("") === preset) {
        success();
      } else {
        failure();
      } 
      input = [];
    }
  }
}
element.onclick = makeKnockCodeHandler("0113")