Question

Hi
I do want to create a textarea without scrollbar just like in facebook and twitter, and the creation of the textarea that changes its height when we click on it.
thank you

Answer 1

If you are looking to use jQuery, there is a plugin called autoResize

Usage is simple:

$('textarea#comment').autoResize({
    // On resize:
    onResize : function() {
        $(this).css({opacity:0.8});
    },
    // After resize:
    animateCallback : function() {
        $(this).css({opacity:1});
    },
    // Quite slow animation:
    animateDuration : 300,
    // More extra space:
    extraSpace : 40
});

Grab this plugin here: http://james.padolsey.com/javascript/jquery-plugin-autoresize/