perf(jqLite): implement and use the `empty` method in place of `html(‘’)`

jQuery's elem.html('') is way slower than elem.empty(). As clearing
element contents happens quite often in certain scenarios, switching
to using .empty() provides a significant performance boost when using
Angular with jQuery.

Closes #4457

1 files changed, 1 insertions, 2 deletions

diff --git a/test/helpers/testabilityPatch.js b/test/helpers/testabilityPatch.js
index 41b5042a..f61be4ee 100644
--- a/test/helpers/testabilityPatch.js
+++ b/test/helpers/testabilityPatch.js
@@ -29,8 +29,7 @@ beforeEach(function() {
     bindJQuery();
   }
 
-
-  angular.element(document.body).html('').removeData();
+  angular.element(document.body).empty().removeData();
 });
 
 afterEach(function() {