function11.md

封装条件

Bad

	if (fsm.state === "fetching" && isEmpty(listNode)) {
	  // ...
	}

Good

	function shouldShowSpinner(fsm, listNode) {
	  return fsm.state === "fetching" && isEmpty(listNode);
	}
	
	if (shouldShowSpinner(fsmInstance, listNodeInstance)) {
	  // ...
	}