diff --git a/src/modules/webpage.js b/src/modules/webpage.js
index 5c19a034..998708c1 100644
--- a/src/modules/webpage.js
+++ b/src/modules/webpage.js
@@ -370,9 +370,11 @@ function decorateNewPage(opts, page) {
             switch (argType) {
             case "object":      //< for type "object"
             case "array":       //< for type "array"
-            case "date":        //< for type "date"
                 str += JSON.stringify(arg) + ","
                 break;
+            case "date":        //< for type "date"
+                str += "new Date(" + JSON.stringify(arg) + "),"
+                break;
             case "string":      //< for type "string"
                 str += quoteString(arg) + ',';
                 break;