code: function makeCheckbox(classes, content, checked, func, useCapture, listners) {
    let ele = createElementWithClass("label", ["input-label"].concat(classes)); //, content);
  
    let child = createElementWithClass("input", ["input-checkbox"].concat(classes));
    child.type = "checkbox";
    child.checked = false;
    if (checked === true) {
      child.checked = checked;
    }
    ele.appendChild(child);
    if (isNode(content)) {
      ele.appendChild(content);
    } else {
      ele.appendChild(document.createTextNode(content));
    }
  
    //listners.push(setEventListenerClickAndEnter(child, func, useCapture));
    if (!isEmptyObject(func)) {
      listners.push(setEventListener(ele, "click", func, useCapture)); //spaceを押すとclickイベントが起こる
    }
    return ele;
  }
docs: Look stylequide title: string checked : bool