diff --git a/src/virtual.js b/src/virtual.js
index 8cde744..c7f3300 100644
--- a/src/virtual.js
+++ b/src/virtual.js
@@ -137,7 +137,7 @@ export default class Virtual {
 
   // calculating range on scroll
   handleScroll (offset) {
-    this.direction = offset < this.offset || offset == 0 ? DIRECTION_TYPE.FRONT : DIRECTION_TYPE.BEHIND
+    this.direction = offset < this.offset || offset === 0 ? DIRECTION_TYPE.FRONT : DIRECTION_TYPE.BEHIND
     this.offset = offset
 
     if (!this.param) {