I want to click a button and execute just one line of code at a time from an already made program.. (javascript)
<p>yeah, so can i do that?</p>

<p>i have a program already written that has two functions.. and one is recursive..
so i want to know how can i execute just one line of code at a time by pressing a button..
i hope it's possible</p>

<p>and also i'm doing this in a web page</p>

<p>this is my script.. it has no importance but just for you to make an idea..</p>

<p>READ THIS... i don't want to debug it with firebug or whatever... i want to make this myself inside my program... i want to make the code execute 1 line at a time when i press a button..so basically im building my own debugger.. the graphical part is already done.. i only need to know how to do this.. </p>

<pre><code>                        function nod(){
                            var info;
                            var st;
                            var dr;
                        }
                        function help(){
                            var rad;
                        }

                        var h = new help();
                        h.rad = new nod();
                        h.rad = null;

                        function create(h,x)
                        {

                            if(h.rad==null)
                            {
                                h.rad = new nod();
                                h.rad.info = x ;
                                h.rad.st = h.rad.dr = null;
                            }
                            else{
                                if(x &lt; h.rad.info){
                                    var h1;
                                    h1 = new help();
                                    h1.rad = h.rad.st;
                                    create(h1,x);
                                    h.rad.st = h1.rad;
                                }
                                else{ 
                                    var h2;
                                    h2 = new help();
                                    h2.rad = h.rad.dr;
                                    create(h2,x);
                                    h.rad.dr = h2.rad;
                                }
                            }


                        }

                        function read(h)
                        {


                            var input = [0,10,2,1,8,9,4,5,3,6,20,11,30,21,31,22,23,
                            ];
                            var i;
                            for(i=1;i&lt;=16;i++)
                            {
                                create(h,input[i]);

                            }



                        }

                        read(h);
</code></pre>
