Enter your age
<?php // Function to read file info function file_read($filename) { $fileArray = file( $filename ); return $fileArray; } print <<< HERE <html> <head> <link href="my.css" rel="stylesheet" type="text/css"> <title>Klent's Heart Rate Monitor</title> <script language="JavaScript"> <!-- // Check what browser the client is using if (navigator.appName == "Microsoft Internet Explorer") { if (navigator.appVersion < "4.0"){ alert("This calculator works best using Internet Explorer 5.0 or better, or the latest version of Netscape, and may not work properly using older browsers. Please use my Perl calculator if the JavaScript does not work for you.") } } if (navigator.appName == "Netscape") { if (navigator.appVersion < "4.78"){ alert("This calculator works best using Internet Explorer 5.0 or better, or the latest version of Netscape, and may not work properly using older browsers. Please use my Perl calculator if the JavaScript does not work for you.") } } // Done // Main Math Function function calculate() { if (document.cal.age.value == "") { alert("Please enter an age") document.cal.age.focus() return false } else { var age = 0; var max = 0; var a = 0; var b = 0; var c = 0; document.getElementById("max").innerHTML= ""; document.getElementById("a").innerHTML= ""; document.getElementById("b").innerHTML= ""; document.getElementById("c").innerHTML= ""; age = document.cal.age.value * 1; max = 220 - age; a = max * .85; b = max * .75; c = max * .60; document.getElementById("max").innerHTML= "<b>" + max + "</b>"; document.getElementById("a").innerHTML= "<b>" + a + "</b>"; document.getElementById("b").innerHTML= "<b>" + b + "</b>"; document.getElementById("c").innerHTML= "<b>" + c + "</b>"; } } function clearIt() { document.getElementById("max").innerHTML= ""; document.getElementById("a").innerHTML= ""; document.getElementById("b").innerHTML= ""; document.getElementById("c").innerHTML= ""; } // Stop Hiding --> </script> </head> <body> <h1 align=center>Heart Rate Calculator</h1> <p> </p> <p> </p> <center> <div class="ptext"> <center> <div class=hcalc> <form name=cal onSubmit="calculate()"> <table border="0" width="100%" align=center> <table> <td width="50%"> <p align="center"><b>Enter your age</b></p> </td> <td width="50%"> <input type="text" name="age" size="8"> </td></tr> <tr><td width="50%" align=right><b>Max Heart Rate: </b></td><td width="50%"><div id="max"></div></td></tr> <tr><td width="50%" align=right><b>85% target: </b></td><td width="50%"><div id="a"></div></td> <tr><td width="50%" align=right><b>75% target: </b></td><td width="50%"><div id="b"></div></td> <tr><td width="50%" align=right><b>60% target: </b></td><td width="50%"><div id="c"></div></td> </tr> </table> <p align="center"><input type="button" value="Calculate" name="B1" onClick="calculate()"><input type="reset" value="Reset" name="B2" onClick="clearIt()"></p> </form> </div> </div> </center> </center> HERE; // Code to display program text $fileName = "example2.php"; $stuffA = file_read($fileName); $numLines = count( $stuffA ); for ($r = 0; $r <= $numLines; $r++) { if ($r != 126) { $stuff = "$stuff"."$stuffA[$r]"; } } print <<< HERE <h3 align=center><b>PHP Code</h3> <center> <div class=pic> <p align=center><img src="pics/softpi.jpg""></p> </div> </center> HERE; include 'menu.php'; print <<< HERE <p> </p> <table width="40%" align=center border=1> <tr> <th width="100%">This Page Demonstrates</th> </tr> <tr> <td width="100%"> <b></b> <ul> <li>JS Form Validation</li> <li>JS Object handling</li> <li>JS page update</li> </ul> </td> </tr> </table> </body> HERE; ?>
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