JavaScript Reference/Javascript Properties/logicalYDPI

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"logicalYDPI" Example

    
<html>
<body>
<script language="JavaScript">
function function1() {
    var m = screen.logicalXDPI;
    var n = screen.logicalYDPI;
    alert("Screen XDPI =\n"+m); 
    alert("Screen YDPI =\n"+n); 
} 
</script>
<input type="button" value="Click me" onclick="function1();">
</body>
</html>



"logicalYDPI" is applied to

+----------------+--------------------------------------------------------------+
| Applied_To     |screen                                                        |
+----------------+--------------------------------------------------------------+



"logicalYDPI" Syntax and Note

Note:
Read-only property. 
Returns the screen vertical dpi (dots per inch).
    
Syntax:
    
screen.logicalYDPI
Источник — «http://wbex.ru/index.php?title=JavaScript_Reference/Javascript_Properties/logicalYDPI&oldid=7365»