Added support for per-property easing

1 files changed, 8 insertions, 1 deletions

diff --git a/src/fx.js b/src/fx.js
index 529fd4cde..6bcaac030 100644
--- a/src/fx.js
+++ b/src/fx.js
@@ -128,6 +128,11 @@ jQuery.fn.extend({
 					// Make sure that nothing sneaks out
 					opt.overflow = this.style.overflow;
 				}
+				if ( jQuery.isArray( prop[p] ) ) {
+					// Create (if needed) and add to specialEasing
+					(opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
+					prop[p] = prop[p][0];
+				}
 			}
 
 			if ( opt.overflow != null ) {
@@ -387,7 +392,9 @@ jQuery.fx.prototype = {
 			this.state = n / this.options.duration;
 
 			// Perform the easing function, defaults to swing
-			this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
+			var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
+			var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
+			this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
 			this.now = this.start + ((this.end - this.start) * this.pos);
 
 			// Perform the next step of the animation