IE Compatibility fix - IE doesn't support add/remove EventListener, r…

…eplaced with add/detach Event
jrrbru · Oct 8, 2013 · db8f87f · db8f87f
1 parent 9f8ac99
commit db8f87f
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/jsbn/rng.js b/jsbn/rng.js
@@ -21,15 +21,21 @@ if(rng_pool == null) {
   var onMouseMoveListener = function(ev) {
     this.count = this.count || 0;
     if (this.count >= 256 || rng_pptr >= rng_psize) {
-      window.removeEventListener("mousemove", onMouseMoveListener);
+      if (window.removeEventListener)
+        window.removeEventListener("mousemove", onMouseMoveListener);
+      else if (window.detachEvent)
+        window.detachEvent("onmousemove", onMouseMoveListener);
       return;
     }
     this.count += 1;
     var mouseCoordinates = ev.x + ev.y;
     rng_pool[rng_pptr++] = mouseCoordinates & 255;
   };
-
-  window.addEventListener("mousemove", onMouseMoveListener);
+  if (window.addEventListener)
+    window.addEventListener("mousemove", onMouseMoveListener);
+  else if (window.attachEvent)
+    window.attachEvent("onmousemove", onMouseMoveListener);
+
 }
 
 function rng_get_byte() {