Cleaned up legacy code for IE8

HISTORY.md

@@ -3,6 +3,11 @@
 http://jsoneditoronline.org
 
 
+## not yet released, version 2.3.4
+
+- Dropped support for IE8, cleaned up legacy code for old browsers.
+
+
 ## 2013-10-17, version 2.3.3
 
 - Added support for search (Ctrl+F) in the code editor Ace.

app/web/app.js

@@ -158,7 +158,6 @@ app.load = function() {
         var domOpen = document.getElementById('open');
         var domOpenMenuButton = document.getElementById('openMenuButton');
         domOpen.onclick = function (event) {
-            event = event || window.event; // for IE8
             var target = event.target || event.srcElement;
             if (target == domOpenMenuButton ||
                     (event.offsetX > domOpen.offsetWidth - domOpenMenuButton.offsetWidth)) {
@@ -174,16 +173,16 @@ app.load = function() {
         var domMenuOpenFile = document.getElementById('menuOpenFile');
         domMenuOpenFile.onclick = function (event) {
             app.openFile();
-            jsoneditor.util.stopPropagation(event);
-            jsoneditor.util.preventDefault(event);
+            event.stopPropagation();
+            event.preventDefault();
         };
 
         // menu button open url
         var domMenuOpenUrl = document.getElementById('menuOpenUrl');
         domMenuOpenUrl.onclick = function (event) {
             app.openUrl();
-            jsoneditor.util.stopPropagation(event);
-            jsoneditor.util.preventDefault(event);
+            event.stopPropagation();
+            event.preventDefault();
         };
 
         // save button

app/web/fileretriever.js

@@ -399,12 +399,11 @@ FileRetriever.prototype.prompt = function (params) {
     };
 
     var onKeyDown = jsoneditor.util.addEventListener(document, 'keydown', function (event) {
-        event = event || window.event;
-        var keynum = event.which || event.keyCode;
+        var keynum = event.which;
         if (keynum == 27) { // ESC
             onCancel();
-            jsoneditor.util.preventDefault(event);
-            jsoneditor.util.stopPropagation(event);
+            event.preventDefault();
+            event.stopPropagation();
         }
     });
 
@@ -484,8 +483,7 @@ FileRetriever.prototype.prompt = function (params) {
     background.className = 'fileretriever-background';
     background.appendChild(border);
     background.onclick = function (event) {
-        event = event || window.event;
-        var target = event.target || event.srcElement;
+        var target = event.target;
         if (target == background) {
             onCancel();
         }

app/web/notify.js

@@ -139,12 +139,11 @@ Notify.prototype.removeMessage = function (message) {
  * @private
  */
 Notify.prototype.onKeyDown = function (event) {
-    event = event || window.event;
-    var keynum = event.which || event.keyCode;
+    var keynum = event.which;
     if (keynum == 27) { // ESC
         // remove the oldest open and closeable message
         this.removeMessage();
-        jsoneditor.util.preventDefault(event);
-        jsoneditor.util.stopPropagation(event);
+        event.preventDefault();
+        event.stopPropagation();
     }
 };

app/web/splitter.js

@@ -57,8 +57,8 @@ Splitter.prototype.onMouseDown = function (event) {
         this.params.changed = false;
         this.params.value = this.getValue();
     }
-    jsoneditor.util.preventDefault(event);
-    jsoneditor.util.stopPropagation(event);
+    event.preventDefault();
+    event.stopPropagation();
 };
 
 /**
@@ -81,8 +81,8 @@ Splitter.prototype.onMouseMove = function (event) {
         this.onChange(value);
     }
 
-    jsoneditor.util.preventDefault(event);
-    jsoneditor.util.stopPropagation(event);
+    event.preventDefault();
+    event.stopPropagation();
 };
 
 /**
@@ -113,8 +113,8 @@ Splitter.prototype.onMouseUp = function (event) {
             }
         }
     }
-    jsoneditor.util.preventDefault(event);
-    jsoneditor.util.stopPropagation(event);
+    event.preventDefault();
+    event.stopPropagation();
 };
 
 /**