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How to create infinite loop of Shuffle Text Effect using following code. It stops after animation is finished. How to start again when first loop of animation is completed?

<script src="http://code.jquery.com/jquery-1.6.3.min.js"></script>
<div id="container">text</div>

main script

    /**
 * @name        Shuffle Letters
 * @author      Martin Angelov
 * @version     1.0
 * @url         http://tutorialzine.com/2011/09/shuffle-letters-effect-jquery/
 * @license     MIT License
 */

(function($){

    $.fn.shuffleLetters = function(prop){

        var options = $.extend({
            "step"      : 10,           // How many times should the letters be changed
            "fps"       : 35,           // Frames Per Second
            "text"      : "",           // Use this text instead of the contents
            "callback"  : function(){}  // Run once the animation is complete
        },prop)

        return this.each(function(){

            var el = $(this),
                str = "";


            // Preventing parallel animations using a flag;

            if(el.data('animated')){
                return true;
            }

            el.data('animated',true);


            if(options.text) {
                str = options.text.split('');
            }
            else {
                str = el.text().split('');
            }

            // The types array holds the type for each character;
            // Letters holds the positions of non-space characters;

            var types = [],
                letters = [];

            // Looping through all the chars of the string

            for(var i=0;i<str.length;i++){

                var ch = str[i];

                if(ch == " "){
                    types[i] = "space";
                    continue;
                }
                else if(/[a-z]/.test(ch)){
                    types[i] = "lowerLetter";
                }
                else if(/[A-Z]/.test(ch)){
                    types[i] = "upperLetter";
                }
                else {
                    types[i] = "symbol";
                }

                letters.push(i);
            }

            el.html("");            

            // Self executing named function expression:

            (function shuffle(start){

                // This code is run options.fps times per second
                // and updates the contents of the page element

                var i,
                    len = letters.length, 
                    strCopy = str.slice(0); // Fresh copy of the string

                if(start>len){

                    // The animation is complete. Updating the
                    // flag and triggering the callback;

                    el.data('animated',false);
                    options.callback(el);
                    return;
                }

                // All the work gets done here
                for(i=Math.max(start,0); i < len; i++){

                    // The start argument and options.step limit
                    // the characters we will be working on at once

                    if( i < start+options.step){
                        // Generate a random character at thsi position
                        strCopy[letters[i]] = randomChar(types[letters[i]]);
                    }
                    else {
                        strCopy[letters[i]] = "";
                    }
                }

                el.text(strCopy.join(""));

                setTimeout(function(){

                    shuffle(start+1);

                },1000/options.fps);

            })(-options.step);


        });
    };

    function randomChar(type){
        var pool = "";

        if (type == "lowerLetter"){
            pool = "abcdefghijklmnopqrstuvwxyz0123456789";
        }
        else if (type == "upperLetter"){
            pool = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        }
        else if (type == "symbol"){
            pool = ",.?/\\(^)![]{}*&^%$#'\"";
        }

        var arr = pool.split('');
        return arr[Math.floor(Math.random()*arr.length)];
    }

})(jQuery);

script

$(function(){

    // container is the DOM element;
    // userText is the textbox

    var container = $("#container")
        userText = $('#userText'); 

    // Shuffle the contents of container
    container.shuffleLetters();



    // Leave a 4 second pause

    setTimeout(function(){      
        // Shuffle the container with custom text
        container.shuffleLetters({
            "text": "Test it for yourself!"
        });
    },1000);

});
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Discussion Span
Last Post by ryantroop
0

I dont use jQuery at all, but from what I am seeing you can probably just change that setTimeout to a setInterval?

Just make sure that the interval length is the same as the amount of time it takes for the animation to finish.

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