假設我有一個搜索功能來進行 HTTP 調用。每次調用可能需要不同的時間。所以我需要取消最后一個 HTTP 請求，只等待最后一個調用async function search(timeout){   const data = await promise(timeout)   return data;}// the promise function is only for visualizing an http callfunction promise(timeout){   return new Promise(resolve,reject){       setTimeout(function(){                 resolve()       },timeout)    }}search(200).then(function(){console.log('search1 resolved')}).catch(function() {console.log('search1 rejected')})search(2000).then(function(){console.log('search2 resolved')}).catch(function(){console.log('search2 rejected')})search(1000).then(function(){console.log('search3 resolved')}).catch(function(){console.log('search3 rejected')})需要看到“search1已解決”“search2被拒絕”“search3已解決”我怎樣才能實現這個場景？