Jquery and Jslint - '$' was used before it was defined

Question

I have some third party javascript im working with, I added some jquery code into it the javascript file. But it seems to fail on the above code when validating using Jslint

'$' was used before it was defined.

I can see at the top of the javascript file it states:

/*global alert: false, console: false, jQuery: false */

Im relatively new to Javascript, and JQuery, so any help would be welcome.

`Above code`? Did you forget to add it for us to see? – webnoob Aug 15 '13 at 11:05 — webnoob, Aug 15 '13 at 11:05

score 77 · Accepted Answer · edited Nov 06 '13 at 03:33

77

Add these options to your comments:

/*jslint browser: true*/
/*global $, jQuery, alert*/

edited Nov 06 '13 at 03:33

Dave Jarvis

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answered Aug 15 '13 at 11:07

kernel

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Documentation on this is here under the "Global Variables" section: http://www.jslint.com/lint.html – fraxture Apr 05 '15 at 13:45
1

Why is it like that? Why can't JSLint just know JQuery? – Jessica Oct 21 '15 at 01:52
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Because there is a world without jQuery, for example on Node.js or on Java Rhino. You don't always want jQuery in your environments, otherwise it could be build into the VM :-P – kernel Oct 27 '15 at 10:59

score 18 · Answer 2 · answered Aug 15 '13 at 11:07

18

If you want to use variables provided by other scripts, then you need to say so:

/*global $ */

answered Aug 15 '13 at 11:07

Quentin

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score 2 · Answer 3 · answered Dec 22 '15 at 13:36

For JSLint In Netbeans IDE go to:

Tools - Options - Miscellaneous - JSLint tab - Text area under "Predefined (, separated)":

add $;
add your other project global variables, separating with comma.

Now JQuery variable $ is considered defined everywhere in code.

Jquery and Jslint - '$' was used before it was defined

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