[gnome-maps/wip/routing2: 3/10] Utils: add hasValue-function

[Mattias Bengtsson <mattiasb src gnome org>]

commit fcae8dc518f06d89eb7d8f9b0dbf689a25728dd2
Author: Mattias Bengtsson <mattias jc bengtsson gmail com>
Date:   Sun Aug 25 02:58:29 2013 +0200

    Utils: add hasValue-function
    
    Utils.hasValue returns true if a value is neither undefined nor null.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=728695

 src/utils.js |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/utils.js b/src/utils.js
index d7cf5bb..c1fd37e 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -138,6 +138,10 @@ function isArray(obj) {
     return Object.prototype.toString.call(obj) === '[object Array]';
 }
 
+function hasValue(obj) {
+    return (typeof obj !== 'undefined' && obj !== null);
+}
+
 function readFile(filename) {
     let status, buffer;
     let file = Gio.File.new_for_path(filename);