[Javascript] How do I convert "FF" to 255?

Sun Apr 22 11:13:04 CDT 2001

TomMallard proposed an even better way:

This works...

parseInt('0xFF')

The 0x means it's a hex number.

tom----- Original Message ----- 
  From: Filipiak, Bob (Contractor) 
  To: 'javascript at LaTech.edu' 
  Sent: Friday, April 20, 2001 7:19 PM
  Subject: RE: [Javascript] How do I convert "FF" to 255?

  Modify this:

  <<HTML>
  <<HEAD>
  <<TITLE>Numbers Conversion Table</TITLE>
  <</HEAD>

  <<BODY>
  <<B>Using toString() to convert to other number bases:</B>
  <TABLE border=1>
  <<TR>
  <<TH>Decimal</TH>
  <<TH>Hexadecimal</TH>
  <<TH>Binary</TH>
  <</TR>
  <<SCRIPT language="JavaScript">
  <<!--
  var content = "";
  var i = 0;
  for (i = 0; i <= 255; i++){
      content = "<TR>";
      content = content + "<TD>" + i.toString(10) + "</TD>";
      content = content + "<TD>" + i.toString(16) + "</TD>";
      content = content + "<TD>" + i.toString(2) + "</TD></TR>";
  document.write(content)
  }

  //-->
  <</SCRIPT>
  <<TR><TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD></TR>
  <</TABLE>
  <</BODY>
  <</HTML>

  Bob Filipiak (Contractor)
  MCP 

    -----Original Message-----
    From: Rui Fortes [mailto:RuiFortes at clix.pt]
    Sent: Friday, April 20, 2001 12:23 PM
    To: javascript at LaTech.edu
    Subject: [Javascript] How do I convert "FF" to 255?

    Hello.

    How can I get an highlighted version of a color.
    That is, how can I find the code of a color wich is a lighter version of another color.
    I tryed to do this myself but I need, for instance, to know how to get a number from a string representing an hexadecimal number.
    I could then add some value to RGB components and use RGB(newred, newgreen, newblue) to get that color.
    I found Hex function that returns a string representing the hexadecimal convertion of a number.
    Is there an inverse function to turn a string into a number?
    Something like afunc("FF") that returns 255.

    Thanks

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