Textarea without scrollbar

Hi I do want to create a tex开发者_如何学运维tarea 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

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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/

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You can find an explanation over here http://www.dazecoop.com/22-10-2008/jquery-textarea-auto-grow-auto-height you just need to get the plugin ;)