完善new

abstain23 · Jun 3, 2020 · 55d948e · 55d948e
1 parent a35eeb2
commit 55d948e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/手写实现new.js b/手写实现new.js
@@ -3,5 +3,5 @@ function copyNew(){
   const Constructor = [...arguments][0]
   obj.__proto__ = Constructor.prototype
   const res = Constructor.apply(obj,[...arguments].slice(1))
-  return typeof res === 'object' ? res : obj
+  return res && (typeof res === 'object') ? res : obj
 }