下面是一个利用 JavaScript Screen 对象检测用户客户端屏幕信息的实例。对于浏览器不支持的属性，输出值会是 undefined。
<html>
<body>
<script language="JavaScript">
document.write("<p>屏幕分辨率： ")
document.write(screen.width + "*" + screen.height + "</p>")
document.write("<p>屏幕可显示面积：")
document.write(screen.availWidth + "*" + screen.availHeight + "</p>")
document.write("<p>颜色深度： ")
document.write(screen.colorDepth + "</p>")
document.write("<p>缓冲深度：")
document.write(screen.bufferDepth + "</p>")
document.write("<p>每英寸水平点数：")
document.write(screen.deviceXDPI + "</p>")
document.write("<p>每英寸垂直点数：")
document.write(screen.deviceYDPI + "</p>")
document.write("<p>水平方向的常规点数：")
document.write(screen.logicalXDPI + "</p>")
document.write("<p>垂直方向的常规点数：")
document.write(screen.logicalYDPI + "</p>")
document.write("<p>是否启用了字体平滑：")
document.write(screen.fontSmoothingEnabled + "</p>")
document.write("<p>屏幕的颜色分辨率（比特/像素）：")
document.write(screen.pixelDepth + "</p>")
document.write("<p>屏幕刷新率：")
document.write(screen.updateInterval + "</p>")
</script>
</body>
</html>