canvas点滴yan

<script type="text/javascript">
    var canvas = document.createElement("canvas");
    canvas.width = 512;
    canvas.height = 128;
    var c = canvas.getContext('2d');
   // 矩形区域填充背景
    c.fillStyle = "#ff00ff";
    c.fillRect(0, 0, 512, 128);
      c.beginPath();
    // 文字
    c.beginPath();
    c.translate(256,64);
    c.fillStyle = "#000000"; //文本填充颜色
    c.font = "bold 48px 宋体"; //字体样式设置
    c.textBaseline = "middle"; //文本与fillText定义的纵坐标
    c.textAlign = "center"; //文本居中(以fillText定义的横坐标)
    c.fillText("郭隆邦_技术博客", 0, 0);
    
    document.body.appendChild(canvas)
    </script>