Promise的用法(js&java)
Promise(onsuccess , on fail)
f1.then(f2.then(), f3.then())
java CompletableFuture.thenAccept
@@@build beautiful things, share happiness@@@
Promise(onsuccess , on fail)
f1.then(f2.then(), f3.then())
java CompletableFuture.thenAccept