diff --git a/snippets/throttle.md b/snippets/throttle.md
index 77bfacc52..3b9801d36 100644
--- a/snippets/throttle.md
+++ b/snippets/throttle.md
@@ -19,14 +19,12 @@ const throttle = (fn, wait) => {
       inThrottle = true;
     } else {
       clearTimeout(lastFn);
-      let time = 0;
       lastFn = setTimeout(function() {
         if (Date.now() - lastTime >= wait) {
           fn.apply(context, args);
           lastTime = Date.now();
         }
-        time = wait - (Date.now() - lastTime)
-      }, time>0 ? time : 0);
+      }, Math.max(wait - (Date.now() - lastTime), 0));
     }
   };
 };