Creating first function for editor

Models/Editor.js

@@ -0,0 +1,28 @@
+(function (jsOMS)
+    {
+        "use strict";
+
+        jsOMS.Modules.Editor.Editor = function (editor)
+        {
+
+        };
+
+        jsOMS.Modules.Editor.prototype.getSelectedText = function()
+        {
+            var text            = '';
+            var activeEl        = document.activeElement;
+            var activeElTagName = activeEl ? activeEl.tagName.toLowerCase() : null;
+            if (
+                (activeElTagName === 'textarea' || activeElTagName === 'input') &&
+                /^(?:text|search|password|tel|url)$/i.test(activeEl.type) &&
+                (typeof activeEl.selectionStart === 'number')
+            ) {
+                text = activeEl.value.slice(activeEl.selectionStart, activeEl.selectionEnd);
+            } else if (window.getSelection) {
+                text = window.getSelection().toString();
+            }
+            return text;
+        };
+
+    }(window.jsOMS = window.jsOMS || {})
+);