screen object
screen
The screen object represents screen information. Commonly used attributes are:
screen.width: screen width, in pixels;
screen.height: Screen height, in pixels;
screen.colorDepth: Returns the number of color digits, such as 8, 16, 24.
<html>
<head>
<script>
'use strict';
alert('Screen size = ' + screen.width + ' x ' + screen.height);
</script>
</head>
<body>
</body>
</html>rrree
new file
<!DOCTYPE html>
<html>
<body>
<h3>Your Screen:</h3>
<script>
document.write("窗口可以使用的屏幕宽高: ");
document.write(window.screen.availWidth + "*" + screen.availHeight);
document.write("<br>");
document.write("屏幕的宽高: ");
document.write(screen.availWidth + "*" + window.screen.height);
document.write("<br>");
document.write("用户浏览器表示的颜色位数: ");
document.write(window.screen.colorDepth);
document.write("<br>");
document.write("用户浏览器表示的颜色位数（ps：IE不支持？亲测好像支持唉）: ");
document.write(screen.pixelDepth);
</script>
<body>
</body>
</html>
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