Get key press events using JavaScript

Get Key Press Events Using JavaScript
script language="javascript" type="text/javascript"

function CheckPressedKey(Key)

{
switch(KeyID)
{
case 13:
alert("Key Pressed: Enter");
break;

case 16:
alert("Key Pressed: Shift");
break;

case 17:
alert("Key Pressed: Ctrl");
break;

case 18:
alert("Key Pressed: Alt");
break;

case 19:
alert("Key Pressed: Pause");
break;

case 37:
alert("Key Pressed: Arrow Left");
break;

case 38:
alert("Key Pressed: Arrow Up");
break;

case 39:
alert("Key Pressed: Arrow Right");
break;

case 40:
alert("Key Pressed: Arrow Down");
break;
}

}


End script

CheckPressedKey(event)

JavaScript trim function Equivalent of PHP trim Function

This function returns a string with whitespace stripped/removed from the beginning and end of string . Without the second parameter, trim() will strip these characters:

* " " (ASCII 32 (0x20)), an ordinary space.
* "\t" (ASCII 9 (0x09)), a tab.
* "\n" (ASCII 10 (0x0A)), a new line (line feed).
* "\r" (ASCII 13 (0x0D)), a carriage return.
* "\0" (ASCII 0 (0x00)), the NUL-byte.
* "\x0B" (ASCII 11 (0x0B)), a vertical tab.

In PHP we can easily use trim($string) and all whitespace are stripped And in JavaScript we use this function to stripped the White spaces.

function trim(sValue)
{
return sValue.replace(/^\s+|\s+$/g, "");
}