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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              //Fuente Original :  http://timelessname.com/sandbox/matrix.html
//Configura el canvas para que ocupe la pantalla entera 
canvas.height = window.screen.height;
canvas.width = window.screen.width;

// una entrada en el array por columna de texto
//cada valor represnta la posición y actual de la columna.  (en canvas 0 es en la parte superior y los valores positivos de y van disminuyendo)
var columns = []
for (i = 0; i < 256; columns[i++] = 1);

//ejecutado una vez por fotograma
function step() {
    //Ligeramente oscurece todo el canvas dibujando un rectángulo negro casi trasnsparente sobre todo el canvas
    /*esto explica tanto el flash inicial de blanco a negro (por defecto el canvas es blanco y progresivamente se convierte en negro) como el fading de los caracteres.*/
    canvas.getContext('2d').fillStyle = 'rgba(0,0,0,0.05)';
    canvas.getContext('2d').fillRect(0, 0, canvas.width, canvas.height);
    
    //verde
    canvas.getContext('2d').fillStyle = '#0F0';
    //para cada clolumna
    columns.map(function (value, index) {
        //fromCharCode convierte puntos de código unicode ( http://en.wikipedia.org/wiki/Code_point ) a un string
        //Los code points están en el rango 30000-30032 (0x7530-0x7550) (田-畐)
        //que está incluido en el bloque de ideogramas unificado CJK ( http://en.wikipedia.org/wiki/CJK_Unified_Ideographs )
        var character = String.fromCharCode(3e4 +
                                            Math.random() * 33);
        //dibujar el carácter
        canvas.getContext('2d').fillText(character, //texto
                                         index * 10, //x
                                         value //y
                                        );
        
        //desplaza hacia abajo el carácter
        //si el carácter es menor de 758 entonces hay una posibilidad aleatoria de que sea reseteado
        columns[index] = value > 758 + Math.random() * 1e4 ? 0 : value + 10
    })
}

//1000/33 = ~30 veces por segundo
setInterval(step, 33)
            
          
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