How to call function in jquery plugin?

Question

(function($) { 
    $.fn.top_islides = function(){
        var ajax_init = function(){
            init_islides();
            setTimeout(function(){picmove()},300);
        };
//.....
    };  
})(jQuery);

call it in doucument ready in another file

$('#top_slides').top_islides();
$('#top_slides').top_islides().ajax_init();

I thought it should work ,I got an error, what's the problem?

Answer 1

Do it like this:

(function($) {
    //Assuming $.fn.top_islides is defined
    $.fn.top_islides.ajax_init = function(){
        init_islides();
        setTimeout(picmove,300);
    };
 //.....
})(jQuery);

Or

(function($) { 
    $.fn.top_islides = function(){
        var ajax_init = function(){
            init_islides();
            setTimeout(picmove,300);
        };
        return {
            ajax_init: ajax_init
        };
    });
     //.....
})(jQuery);