the undefined object in JS is evil, use the typeof operator instead

diff --git a/test/phantom/evaluate.js b/test/phantom/evaluate.js
index 27a2d71..ccf01e4 100644 (file)
--- a/test/phantom/evaluate.js
+++ b/test/phantom/evaluate.js
@@ -26,7 +26,7 @@ page.viewportSize = {
 
 // 0: silent, 1: some infos,  2: display console.log() output
 var debug = 2;
-if (system.env['DEBUG'] != 'undefined' && parseInt(system.env['DEBUG']) != NaN) {
+if (typeof system.env['DEBUG'] != 'undefined' && parseInt(system.env['DEBUG']) != NaN) {
     debug = system.env['DEBUG'];
     if (debug > 0) console.log("reset debug level to: " + debug);
 }