Added constant NO_TIMEOUT

javascript/src/Alert.js

@@ -72,7 +72,7 @@ var QfqNS = QfqNS || {};
      * @param {string} options.message message to be displayed
      * @param {string} [options.type] type of message, can be `"info"`, `"warning"`, or `"error"`. Default is `"info"`.
      * @param {number} [options.timeout] timeout in milliseconds. If timeout is less than or equal to 0, the alert
-     * won't timeout and stay open until dismissed by the user. Default `0`.
+     * won't timeout and stay open until dismissed by the user. Default `n.Alert.constants.NO_TIMEOUT`.
      * @param {boolean} [options.modal] whether or not alert is modal, i.e. prevent clicks anywhere but the dialog.
      * Default is `false`.
      * @param {object[]} options.buttons what buttons to display on alert. If empty array is provided, no buttons are
@@ -92,14 +92,14 @@ var QfqNS = QfqNS || {};
             this.buttons = arguments[2] || [];
             this.modal = false;
             // this.timeout < 1 means forever
-            this.timeout = 0;
+            this.timeout = n.Alert.constants.NO_TIMEOUT;
         } else {
             // new style
             this.message = options.message || "MESSAGE";
             this.messageType = options.type || "info";
             this.buttons = options.buttons || [];
             this.modal = options.modal || false;
-            this.timeout = options.timeout || 0;
+            this.timeout = options.timeout || n.Alert.constants.NO_TIMEOUT;
         }
 
         this.$alertDiv = null;
@@ -117,7 +117,8 @@ var QfqNS = QfqNS || {};
     n.Alert.constants = {
         alertContainerId: "qfqAlertContainer",
         alertContainerSelector: "#qfqAlertContainer",
-        jQueryAlertRemoveEventName: "qfqalert.remove:"
+        jQueryAlertRemoveEventName: "qfqalert.remove:",
+        NO_TIMEOUT: 0
     };
 
     /**