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JavaScript: Ci is not defined

Answer 1

A:

Assuming it's CodeIngiter, it can't find the js file.

Diodeus 2008-11-06 17:56:16

I'm not using CodeIgniter.

BlaM 2008-11-06 18:02:02

Answer 2

+3 A:

I don't know which version of FF you are using, but regardless, the message is probably referring to the fact that bla() is not a function available on the String object. Since you were missing the $, which means you were missing a function, ("asd") would evaluate to a string, and then the JavaScript interpreter would try to call bla() on that object. So, if you had the following code in your project:

String.prototype.bla = function() {};

// now this next line will execute without any problems:
("asd").bla();

So, it is possible that Ci is some internal Firefox symbol that simply refers to the idea of a function. That is my guess, I imagine you are going to need someone that knows something about Firefox's internals to get a better answer to this question...

UPDATE: I am running your example code in the exact same version of FF as you are, but it reports the error as:

Error: "asd".bla is not a function
Source File: file:///C:/test.html
Line: 3

Perhaps you have an extension/plug-in running that does something with this? Maybe some Greasemonkey script or something?

Jason Bunting 2008-11-06 17:56:19

Plugin: Might be... Greasemonkey: It shouldn't do anything on that host... But who knows... ;)

BlaM 2008-11-06 18:38:25

You seem to be right. Ci is used in quite a lot of plugins as a shortcut to "Components.interfaces".

BlaM 2008-11-06 18:43:36

Answer 3

+2 A:

Jason seems to be right. Many plugins (e.g. Firebug, Geode) use Ci as a shortcut:

const Ci = Components.interfaces;

So the plugins seem to cause that strange error message.

BlaM 2008-11-06 18:47:01

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