Do not fire the event if there is no change in deltaX and deltaY

brandonaaron · brandonaaron · commit 36ece575ac32 · 2013-11-13T12:21:46.000-05:00
diff --git a/jquery.mousewheel.js b/jquery.mousewheel.js
@@ -100,6 +100,9 @@
           delta  = detlaX * -1;
         }
 
+        // No change actually happened, no reason to go any further
+        if ( deltaY === 0 && deltaX === 0 ) { return; }
+
         // Look for lowest delta to normalize the delta values
         absDelta = Math.abs(delta);
         if ( !lowestDelta || absDelta < lowestDelta ) { lowestDelta = absDelta; }

Original file line number	Diff line number	Diff line change
`@@ -100,6 +100,9 @@`
`100`	`100`	`delta = detlaX * -1;`
`101`	`101`	`}`
`102`	`102`
	`103`	`+ // No change actually happened, no reason to go any further`
	`104`	`+ if ( deltaY === 0 && deltaX === 0 ) { return; }`
	`105`	`+`
`103`	`106`	`// Look for lowest delta to normalize the delta values`
`104`	`107`	`absDelta = Math.abs(delta);`
`105`	`108`	`if ( !lowestDelta \|\| absDelta < lowestDelta ) { lowestDelta = absDelta; }`