The Tor Browser: browser/devtools/debugger/test/doc_closure-optimized-out.html@b8a032363ba2 (annotated)

browser/devtools/debugger/test/doc_closure-optimized-out.html@b8a032363ba2 (annotated)

Thu, 22 Jan 2015 13:21:57 +0100

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 <!DOCTYPE HTML>
 <html>
   <head>
     <meta charset='utf-8'/>
     <title>Debugger Test for Inspecting Optimized-Out Variables</title>
     <!-- Any copyright is dedicated to the Public Domain.
          http://creativecommons.org/publicdomain/zero/1.0/ -->
     <script type="text/javascript">
       window.addEventListener("load", function onload() {
         window.removeEventListener("load", onload);
         function clickHandler(event) {
           button.removeEventListener("click", clickHandler, false);
           function outer(arg) {
             var upvar = arg * 2;
             // The inner lambda only aliases arg, so the frontend alias analysis decides
             // that upvar is not aliased and is not in the CallObject.
             return function () {
               arg += 2;
             };
           }
           var f = outer(42);
           f();
         }
         var button = document.querySelector("button");
         button.addEventListener("click", clickHandler, false);
       });
     </script>
   </head>
   <body>
     <button>Click me!</button>
   </body>
 </html>