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, 1 deletions

diff --git a/docs/components/angular-bootstrap/bootstrap-prettify.js b/docs/components/angular-bootstrap/bootstrap-prettify.js
index 43248943..72c136d1 100644
--- a/docs/components/angular-bootstrap/bootstrap-prettify.js
+++ b/docs/components/angular-bootstrap/bootstrap-prettify.js
@@ -28,7 +28,7 @@ function escape(text) {
 function setHtmlIe8SafeWay(element, html) {
   var newElement = angular.element('<pre>' + html + '</pre>');
 
-  element.html('');
+  element.empty();
   element.append(newElement.contents());
   return element;
 }