HTML DOM Screen 对象
bufferDepth 属性设置或返回在 off-screen bitmap buffer 中调色板的比特深度。
</>codescreen.bufferDepth=number
</>code<html><body><script type="text/javascript">document.write("<p>Buffer Depth: ")document.write(screen.bufferDepth + "</p>")</script></body></html>
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