Make requests Async Fixes #1 - TAG 1.0.0

manifest.json

@@ -3,7 +3,7 @@
 
   "name": "GitHub Release Downloads",
   "description": "This extension displays the number of downloads GitHub releases have on the releases page.",
-  "version": "0.1.2",
+  "version": "1.0.0",
   "icons": {
     "16": "icon16.png",
     "48": "icon48.png",

releases.js

@@ -1,23 +1,34 @@
-//TODO async
 var xmlHttp = new XMLHttpRequest();
+xmlHttp.onreadystatechange = function () {
+   switch (xmlHttp.readyState) {
+      case 0 : // UNINITIALIZED
+      case 1 : // LOADING
+      case 2 : // LOADED
+      case 3 : // INTERACTIVE
+      break;
+      case 4 : // COMPLETED
+		var releases = JSON.parse( xmlHttp.responseText );
+		var downloadMap = [];
+		for (var i in releases) {
+			for (var j in releases[i].assets) {
+				downloadMap[releases[i].assets[j].browser_download_url] = releases[i].assets[j].download_count;
+			}
+		}
+		var els = document.getElementsByTagName("a");
+		for (var i = 0, l = els.length; i < l; i++) {
+			var el = els[i];
+			if ( el.href in downloadMap ) {
+				var dwnCount = document.createElement( 'small' );
+				dwnCount.appendChild( document.createTextNode( ' - ' + downloadMap[el.href] + ' downloads' ) )
+				el.appendChild( dwnCount );
+			}
+		}
+      break;
+      default: console.log( 'Error: GitHub Release Donwload Count Request Errored.' );
+   }
+};
 xmlHttp.open( "GET",
 	document.URL.replace( '//github.com', '//api.github.com/repos' ).split( '/tag/' )[0],
-	false
+	true
 	);
 xmlHttp.send( null );
-var releases = JSON.parse( xmlHttp.responseText );
-var downloadMap = [];
-for (var i in releases) {
-	for (var j in releases[i].assets) {
-		downloadMap[releases[i].assets[j].browser_download_url] = releases[i].assets[j].download_count;
-	}
-}
-var els = document.getElementsByTagName("a");
-for (var i = 0, l = els.length; i < l; i++) {
-    var el = els[i];
-	if ( el.href in downloadMap ) {
-		var dwnCount = document.createElement( 'small' );
-		dwnCount.appendChild( document.createTextNode( ' - ' + downloadMap[el.href] + ' downloads' ) )
-		el.appendChild( dwnCount );
-	}
-}