/ Published in: JavaScript
![](/img/icon_sav.png?v3)
Expand |
Embed | Plain Text
Copy this code and paste it in your HTML
/** helper to determine if a variable is defined */ function isDefined(foo) { return 'undefined' !== typeof(foo) && null != foo; }
Comments
![RSS Feed for Comments RSS Icon](/images/rss.png?v3)
/** helper to determine if a variable is defined */ function isDefined(foo) { return 'undefined' !== typeof(foo) && null != foo; }