jquery.stepbystep.js

/**
 * jQuery Stepbystep plugin
 * http://www.tinysay.com/
 *
 * Copyright 2012, Tamer Agaoglu
 * Licensed under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Date: Tuesday 27 Nov 2012
 */
;(function ($) {
	$.fn.stepbystep = function(options,callback){
	 
	/* OPTIONS DEFAULTS */

	var defaults = { 									
		speed					: 600,		// effect speed
		start					: true,		// item open or close ?
		number					: 0,		// first item number
		effect					: "fade",	// fade , slide
		random					: false,	// random number all items ? 
		wait					: 100,		// delay all
    };
    var options = $.extend({}, defaults, options); 

    if(typeof callback != 'function') { 
        callback = function(){ }; 
    }
    
    if($(this)==undefined){
    		return false;
    } else if($(this)==null){
    		return false;
    } else if($(this).length<1){
    		return false;
	}
    	
    var $this = $(this);
    var total = $this.length;
    var item = $this.eq(options.number);
    var next = parseInt(options.number+1);
   
    /* END STEP : START */
    
    if(item==undefined){
    	    callback(); 
    		return false;
    } else if(item==null){
	       	callback(); 
    		return false;
    } else if(item.length<1){
    		callback();
    		return false;
	}
	
   /* END STEP : END */   

   if(options.start==true){

   		if(options.effect=="fade"){
   		    item.delay(options.wait).slideDown(options.speed, function () {
                $this.stepbystep({
                speed : options.speed,
                start : options.start,
                number : options.number+1,
                effect : options.effect,
                random : options.random,
                wait : options.wait
                }, callback);
            });
   		}
   } else {
   		if(options.effect=="fade"){
   		    item.delay(options.wait).slideUp(options.speed, function () {
                $this.stepbystep({
                speed : options.speed,
                start : options.start,
                number : options.number+1,
                effect : options.effect,
                random : options.random,
                wait : options.wait
                }, callback);
            });
   		}		
   }

   };	
})(jQuery);