need codin advice

Software > Computer programming

need codin advice

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charlzguitarz:
Hi, Just wading thru trying to keep my little mind intact. My project is a
calculator. The code:
refreshes database, doesn't display data being entered, but does create the

records (zeroes), prints record.
Im hoping someone will take a look at this, please.
Below is my code; Yeah, I could have removed a little:
<!DOCTYPE html><html><head>
<meta charset=utf-8>
<title>personal calculator</title>

<style type="text/css">input { text-align:center; } </style>



</head>
<BODY><p><center>
<marquee behavior="scroll" direction="left" scrollamount="5" id="marquee2">
<img src="http://localhost/images/refreshnow.gif" height=50 width=100>
<img src="http://localhost/images/becertain.gif" height=50 width=100>
</marquee>

<marquee behavior="scroll" direction="right" scrollamount="10" id="marquee2">
<img src="http://localhost/images/refreshnow.gif" height==50 width=100>
<img src="http://localhost/images/becertain.gif" height==50

width=100></marquee>



<img src="http://localhost/images/yesbutton.png" height=25 width=50 alt="yes

button">


click
<img src="http://localhost/images/nobutton.png" height=25 width=50 alt="no

button">[/url]


<style type="text/css">
body {font-family: helvetica}
p {font-size: 12pt}
.red {color: red}
.blue {color: blue}
</style>

<SCRIPT>
var Memory = 0;
var purpose = "";
var value1 = 0;
var value2 = 0;
var NewNumber = "";
var opvalue = "";
var op = opvalue;

function Display(displaynumber) {
document.calculator.answer.value = displaynumber;
}

function MemoryClear()
{Memory = 0;document.calculator.mem.value = "";}

function MemoryRecall(answer)
{
if(NewNumber !== "")
{value2 += answer;}
else
{value1 = answer;}
NewNumber = "";
Display(answer);
}

function MemorySubtract(answer)
{Memory = Memory - eval(answer);}

function MemoryAdd(answer)
{Memory = Memory + eval(answer);
document.calculator.mem.value = " M ";NewNumber = "";}

function ClearCalc()
{value1 = "";value2 = "";NewNumber = "";Display("");}

function Backspace(answer)
{
answerlength = answer.length;
answer = answer.substring(0, answerlength - 1);if (value2 !== "")
{value2 = answer.toString();Display(value2);}
else
{value1 = answer.toString();Display(value1);}
}

function CECalc()
{value2 = "";NewNumber = "yes";Display("");}

function CheckNumber(answer)
{
if(answer == ".")
{
Number = document.calculator.answer.value;
if(Number.indexOf(".") != -1)
{answer = ""; }
}
if(NewNumber == "yes")
{value2 += answer;Display(value2);}
else
{
if(NewNumber '==' "")
{value1 = answer;value2 = "";NewNumber = "no";}
else
{value1 += answer;}
Display(value1);
}
}
function AddButton(x)
{
if(x == 1) EqualButton();
if(value2 !== "")
{value1 = parseFloat(value1) + parseFloat(value2);}
NewNumber = "yes";
opvalue = '+';
Display(value1);
}
function SubButton(x)
{
if(x == 1) EqualButton();
if(value2 !== "")
{value1 = parseFloat(value1) - parseFloat(value2);}
NewNumber = "yes";
opvalue = '-';
Display(value1);
}
function MultButton(x)
{
if(x == 1) EqualButton();
if(value2 !== "")
{value1 = parseFloat(value1) * parseFloat(value2);}
NewNumber = "yes";
opvalue = '*';
Display(value1);
}
function DivButton(x)
{
if(x == 1) EqualButton();
if(value2 !== "")
{value1 = parseFloat(value1) / parseFloat(value2);}
NewNumber = "yes";
opvalue = '/';
Display(value1);
}
function SqrtButton()
{value1 = Math.sqrt(value1);NewNumber = "";Display(value1);}
function PercentButton()
{
if(NewNumber != "blank")
{value2 *= '.01';NewNumber = "";Display(value2);}
}
function RecipButton()
{value1 = 1/value1;NewNumber = "";Display(value1);}
function NegateButton()
{value1 = parseFloat(-value1);NewNumber = "no";Display(value1);
}
function EqualButton() {
if(opvalue == '+') AddButton(0);
if(opvalue == '-') SubButton(0);
if(opvalue == '*') MultButton(0);
if(opvalue == '/') DivButton(0);
value2 = "";
opvalue = "";
}
function OnCalc(purpose,value1,op,value2,total)
{return(purpose,value1,op,value2,total);}
// End -->
</script>
</head>
<body>
<center>

<FORM name="calculator" id="calculator"
action="http://localhost/calculator/post1.php" method="post">
<input type="text" id="purpose" name="purpose" size="46" value="what's this

for?" onFocus="this.value=''">


<table bgcolor="#aaaaaa" width=220>
<tr><td>
<table bgcolor="#cccccc" border=1>
<tr><td>
<table border=0 cellpadding=0>
<tr><td bgcolor="#000080"><b style="color:white">Calculator</td></tr>
<tr><td>
<table width="100%" border=0>
<tr><td colspan=6><input type="text" name="answer" size=30 maxlength=30

onChange="CheckNumber(this.value)"></td></tr>
<tr><td colspan=6>
<table border=0 cellpadding=0>
<tr><td>
<input type="text" name="mem" size=3 maxlength=3> <input type="button"

name="backspace" class="red" value="Backspace"

onClick="Backspace(document.calculator.answer.value); return false;"> <input

type="button" name="CE" class="red"

value=" CE " onClick="CECalc(); return false;"> <input type="reset" name="C"

class="red" value=" C "

onClick="ClearCalc(); return false;">
</td></tr>
</table>
</td></tr>
<tr><td><input type="button" name="MC" class="red" value=" MC "

onClick="MemoryClear(); return false;"></td>
<td><input type="button" name="calc7" class="blue" value=" 7 "

onClick="CheckNumber('7'); return false;"></td>
<td><input type="button" name="calc8" class="blue" value=" 8 "

onClick="CheckNumber('8'); return false;"></td>
<td><input type="button" name="calc9" class="blue" value=" 9 "

onClick="CheckNumber('9'); return false;"></td>
<td><input type="button" name="divide" class="red" value=" / "

onClick="DivButton(1); return false;"></td>
<td><input type="button" name="sqrt" class="blue" value="sqrt"

onClick="SqrtButton(); return false;"></td></tr>
<tr>
<td><input type="button" name="MR" class="red" value=" MR "

onClick="MemoryRecall(Memory); return false;"></td>
<td><input type="button" name="calc4" class="blue" value=" 4 "

onClick="CheckNumber('4'); return false;"></td>
<td><input type="button" name="calc5" class="blue" value=" 5 "

onClick="CheckNumber('5'); return false;"></td>
<td><input type="button" name="calc6" class="blue" value=" 6 "

onClick="CheckNumber('6'); return false;"></td>
<td><input type="button" name="multiply" class="red" value=" * "

onClick="MultButton(1); return false;"></td>
<td><input type="button" name="percent" class="blue" value=" % "

onClick="PercentButton(); return false;"></td></tr>
<tr><td><input type="button" name="MS" class="red" value=" MS "

onClick="MemorySubtract

(document.calculator.answer.value); return false;"></td>
<td><input type="button" name="calc1" class="blue" value=" 1 "

onClick="CheckNumber('1'); return false;"></td>
<td><input type="button" name="calc2" class="blue" value=" 2 "

onClick="CheckNumber('2'); return false;"></td>
<td><input type="button" name="calc3" class="blue" value=" 3 "

onClick="CheckNumber('3'); return false;"></td>
<td><input type="button" name="minus" class="red" value=" - "

onClick="SubButton(1); return false;"></td>
<td><input type="button" name="recip" class="blue" value="1/x "

onClick="RecipButton(); return false;"></td></tr>
<tr><td><input type="button" name="Mplus" class="red" value=" M+ "

onClick="MemoryAdd

(document.calculator.answer.value); return false;"></td>
<td><input type="button" name="calc0" class="blue" value=" 0 "

onClick="CheckNumber('0'); return false;"></td>
<td><input type="button" name="negate" class="blue" value="+/- "

onClick="NegateButton(); return false;"></td>
<td><input type="button" name="dot" class="blue" value=" . "

onClick="CheckNumber('.'); return false;"></td>
<td><input type="button" name="plus" class="red" value=" + "

onClick="AddButton(1); return false;"></td>
<td><input type="button" name="equal" class="red" value=" = "

onClick="EqualButton(); return false;"></td>
</tr>
</table>
</td></tr>
</table>
</td></tr>
</table>
</td></tr>
</table>

<input type="submit" id="keypad" name="keypad" value="submit">
</form>
print

</center></body></html>

Thanks

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