javascript/jQuery - What is jQuery.fx?

Question

I have seen $.fx.step. backgroundPosition = function(fx) {...} in some javascript snippet. I can\'t find much infomation about $.fx.

Can an

Answer 1

Here is stated, that fx object is declared as follows:

fx: function( elem, options, prop ) {
        this.options = options;
        this.elem = elem;
        this.prop = prop;

        if ( !options.orig ) {
            options.orig = {};
        }
}

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