bind - jQuery: textbox keyup firing twice

Question

I'm having a textbox and assigned the following function (it's the only function assigned):

txt.bind("keyup",function(event){
    if(event.keyCode==13)
    {
        var nu = $("#debug").html();
        nu+="<br>enter";
        $("#debug").html(nu);
    }
});

The strange thing is that it's actually firing twice, thus displaying "enter" twice in my debug window. Does anyone know what is causing this?

Answer 1

I know it's been quite awhile, but I'm surprised nobody suggested:

txt.unbind();
txt.bind("keyup",function(event){
    if(event.keyCode==13)
    {
        var nu = $("#debug").html();
        nu+="<br>enter";
        $("#debug").html(nu);
    }
});

If somehow txt got bound already, calling unbind before your new bind should fix it. Of course it's preferable to figure out why it's being bound twice. This just happened to me, because I accidentally had my JavaScript file included twice. Calling unbind helped me determine that was the problem.