Implement element equality

lib/capybara/webkit/node.rb

@@ -122,5 +122,9 @@ module Capybara::Webkit
     def multiple_select?
       self.tag_name == "select" && self["multiple"]
     end
+
+    def ==(other)
+      invoke("equals", other.native) == "true"
+    end
   end
 end

src/capybara.js

@@ -338,6 +338,10 @@ Capybara = {
     };
     mouseTrigger('mousemove', options);
     mouseTrigger('mouseup', options);
+  },
+
+  equals: function(index, targetIndex) {
+    return this.nodes[index] === this.nodes[targetIndex];
   }
 };