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Join Date: Jul 2005

Posts: 37

Reputation: jasondrey13 is an unknown quantity at this point

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Solved Threads: 0

jasondrey13 jasondrey13 is offline

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debugging?

Mar 8th, 2008

hey im really new with javascript.
can someone tell me whats wrong with this?

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <meta http-equiv="content-type" content="text/html; charset=windows-1250">
  <title>calculate distance and slope between two points</title>
  
  <script language="javascript">
  <!--
  
  var x1=0;
  var y1=0;
  var x2=0;
  var y2=0;
  var xdif=0;
  var ydif=0;
  var xsldif=0;
  var xdifsquared=0;
  var ydifsquared=0;  
  var undersquare=0;
  var distance=0;
  var slope=0;
  
  function calculate()
   {
  
  x1=document.calcform.inpx1.value;
  y1=document.calcform.inpy1.value;
  x2=document.calcform.inpx2.value;
  y2=document.calcform.inpy2.value;
  
  xdif=x2-x1;
  ydif=y2-y1;
  
  xdifsquared=xdif*xdif;
  ydifsquared=ydif*ydif;
  
  undersquare=xdifsquared+ydifsquared;
  
  distance=Math.sqrt(undersquare);
  slope=ydif/xdif;
  
  //-->
  }  
  

  </script>
  </head>
  <body>
  
  <p><img src="distanceformula.gif" border="1">  </p>
  <p><img src="slope.gif" border="1"></p>
  <form name="calcform">
  <p>point 1: ( 
    <input type="text" name="inpx1" size="5"> 
    , 
    <input type="text" name="inpy1" size="5"> 
    ) <br>
 point 2: ( 
 <input type="text" name="inpx2" size="5"> 
 , 
 <input type="text" name="inpy2" size="5"> 
 )<br>
  </p>
  <button type="submit" onClick="calculate();">Calculate!</button>
  <p>
    <strong>distance:</strong>
    
  <script language="javascript">document.write(distance);</script>
  
  </p>
  <p><strong>slope:</strong><br>
    <script language="javascript">document.write(slopetop);</script>
    
<br>
-----    = <script language="javascript">document.write(slopefinal);</script><br>

    <script language="javascript">document.write(slopebottom);</script>
    <br>
  </p>
  </form>




  </body>
</html>

thanks so much,
Jason