getElementsByName() properties not working inside loop !!

   var textboxes = document.getElementsByName("textbx");
        var i=0;
        
        for (i=0;i<=textboxes.length;i++)
        {
            document.write ("Looping " + i + " time");

             document.write(textboxes[i].value);
            
        }

HTML:

Would any one please explain why this part of code isnt working ??

if i put the chkboxes.length outside the loop, then it prints out the values properly. But inside the loop it doesnt work at all!

Please help !!

 

try:
textboxes.item(i).value

ps: hope you have inputs with a name of "textbx"
+ where does chkboxes.length come in to it?