Question

I used jQuery many times ago, but always used like this: $(document). Lately i seen many times somebody using jQuery(document), I don’t know difference between them, I thought they are same.

But I have very hard problem now. You know most of jQuery plugin uses $(document) method. Now I have one must use plugin that uses jQuery(document). I must include that, but after included I can’t no longer use $(document) method and plugins which uses it.

How can I solve it?

Answer 1

$ is just a short reference to the global jQuery object.

window.$ === window.jQuery // true

Most plugin authors make sure that the dollar sign really is referencing the jQuery object, by putting it into a self-invoking method.

(function( $ ) {
    // $(document)
}( jQuery ));

By invoking that anonymous method with the jQuery object as argument, we can access it within the method via $.