jquery.cookie plugin, gettign an error saying jquery is not defined?

I included the jquery.cookie.js in my application and I am getting a firefox error saying jquery is not defined?

I have jquery in the project FOR SURE, removing the jquery.cookie.js 开发者_开发问答script gets rid of the error.

What could be the reason for this?

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Make sure you have jQuery declared before jQuery.cookie.js

You can't use the jQuery object until it's declared and thus why it does matter the order.

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if you are using mulitple versions of jquery in one script you might get that error. solution

Using different versions of jQuery and jQueryUI together

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To make sure jQuery is available wrap your jQuery code in:

(function ($) {
     // your Code.
})(jQuery);

Additionally you may check for jquery.cookie:

(function ($) {
    if (typeof $.cookie != 'undefined'){
        var test = ($.cookie('test') === 'true');
    }
})(jQuery);