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JavaScript - Age Calculator - Help!!

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Age Calculator - Help!!	View Content

I'm using the following code to calculate an age from the given date of birth however it works for some DOB's, gives wrong answers for some and undefined for others, can someone help me?

Code:

 
<div style="font-size:13px; font-family:Verdana;">
<script>
 <!--
/*Darren McGrady */
 var current= new Date()
 var day  = current.getDate()
 var month = current.getMonth() + 1
 var year = current.getFullYear()
 var a = 29
 var b = 12
 var c = 1980
 var age

if (month < b)
      age = (year-c)-1

if ((month == b) && (day < a))
      age = (year-c)-1
else
      age = year-c

document.write(age);

//-->
 </script>
</div>

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Bmi Calculator

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Hi ,
this is my bmi calculator script

<HEAD>

<script type="text/javascript">


</script>
</HEAD>



<BODY>

<div align="left">
<form name="form" id="form">
<input type="Text" name="weight" size="4"> Peso (Kg)<br>
<input type="Text" name="height" size="4"> Altezza (Cm)<br>
<input type="Text" name="BodyMassIndex" id="BodyMassIndex" size="4"> BMI<br>
<input type="Text" name="feedback" id="feedback" style="padding:10px 0 20px 0; border:none; font-weight:600; color:#555555; font-family:verdana;" ><br>
<input type="button" style="font-size: 8pt" value="Calcola" onClick="calculateBMI()" name="button">
<input type="reset" style="font-size: 8pt" value="Reset" onclick="resetAll()" name="button">
</form>
</div>

<!-- Script Size:

I would want to show writing that it says if is in overweight, norms or I underweigh, but the script does not work. could someone help me? please

Some Help Regarding Calculator

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Below is the code for a calculator using script.
can one help me to explain me the colored line??

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
</head>

<body>
</body>
<script language="javascript" type="text/javascript">
function multiply()
{
a=Number Quote:
Quote:
(document.calculator.number1.value)

;
b=Number(document.calculator.number2.value);
c=a*b;
document.calculator.total.value=c;
}
function addition(){
a=Number(document.calculator.number1.value);
b=Number(document.calculator.number2.value);
c=a+b;
document.calculator.total.value=c;
}
function subtraction(){
a=Number(document.calculator.number1.value);
b=Number(document.calculator.number2.value);
c=a-b;
document.calculator.total.value=c;
}
function division(){
a=Number(document.calculator.number1.value);
b=Number(document.calculator.number2.value);
c=a/b;
document.calculator.total.value=c;
}
function modulus(){
a=Number(document.calculator.number1.value);
b=Number(document.calculator.number2.value);
c=a%b;
document.calculator.total.value=c;
}
</script>

</head>

<body>

<form name="calculator">
Number 1: <input type="text" name="number1">
Number 2: <input type="text" name="number2">
Get Result: <input type="text" name="total">
<input type="button" value="ADD" onclick="javascript:addition();">
<input type="button" value="SUB" onclick="javascript:subtraction();">
<input type="button" value="MUL" onclick="javascript:multiply();">
<input type="button" value="DIV" onclick="javascript:division();">
<input type="button" value="MOD" onclick="javascript:modulus();">

</form>

</body>
</html>

Help! Calculator...

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Hi all. I'm having a bit of a problem returning a different value each time a different button is pressed for calculator.

What am I doing wrong?

Code:

<script>
function calc(btname){
for(var x=0;x<=11;x++){
if(x==0){
btname="zero";
}else if(x==1){
btname="one";
}else if(x==2){
btname="two";
}else if(x==3){
btname="three";
}else if(x==4){
btname="four";
}else if(x==5){
btname="five";
}else if(x==6){
btname="six";
}else if(x==7){
btname="seven";
}else if(x==8){
btname="eight";
}else if(x==9){
btname="nine";
}else if(x==10){
btname="multiply";
}else if(x==11){
btname="divide";
}
if('document.forms.test.'+btname+'.onClick'){
alert(btname);
}
}
}

function scalc(){
var sign="";
var btname="";
document.write('<form name="test">');
for(var x=0;x<=11;x++){
if(x==0){
btname="zero";
}else if(x==1){
btname="one";
}else if(x==2){
btname="two";
}else if(x==3){
btname="three";
}else if(x==4){
btname="four";
}else if(x==5){
btname="five";
}else if(x==6){
btname="six";
}else if(x==7){
btname="seven";
}else if(x==8){
btname="eight";
}else if(x==9){
btname="nine";
}else if(x==10){
btname="multiply";
sign = "*";
}else if(x==11){
btname="divide";
sign = "/";
}
if(x<10){
document.write('<input type="button" size="30" name="'+btname+'" value="'+x+'" onClick="calc(this);">&nbsp;');
}else if(x>9 && x<12){
document.write('<input type="button" size="30" name="'+btname+'" value="'+sign+'" onClick="calc(this);">&nbsp;');
}
if(x==2 || x == 5 || x == 8){
document.write('<br>');
}
}
document.write('</form>');
}
scalc();
</script>

ANY help is GREATLY appreciated!

Help With Calculator.

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How could i make a calculator that changes three values when a vertex on an image moves. Example : When a point moves on the triangle it changes the cost quality and time.
I have this start and need the meat for the concept to work.<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>

<body>
<p><img src="Assets/Project-triangle.svg.png" width="500" height="492" alt=""/>-------------------------------------------<img src="Assets/triangle.gif" width="224" height="210" alt=""/></p>
<p>
<label for="textfield">Cost :</label>
<input type="text" name="textfield" id="textfield">
<label for="textfield2"> Time :</label>
<input type="text" name="textfield2" id="textfield2">
<label for="textfield3">Quality :</label>
<input type="text" name="textfield3" id="textfield3">
</p>
<p> </p>
</body>
</html>

Help would be greatly appreciated!

Calculator Problems

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i am building/coding a simple calculator and i have this
Code:

function addDigit() {
	if(id=7) {
		document.getElementById("display").value="7";
	}
	if(id=8) {
		document.getElementById("display").value="8";
	}
	if(id=9) {
		document.getElementById("display").value="9";
	}
}

function clearAll() {
	document.getElementById("display").value="";
}

as the code but when i press the 7 8 or 9 buttons it only shows up as a 9.
go to http://www.mightypeacock.com/Practice/calculator.html to see what i mean.

Pls Help Me Debug My Js Calculator

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I've got this code below, it seems ok, but sometimes, the multiplication does not work..i don't know why... pls help me..thanks

btw, this is my 1st javascript "application", so, im really new into this

thanks in advance for any help

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>My First JavaScript Application</title>

<style type="text/css">
td
{
	text-align:center
}
table
{
	background:#660033
}
body
{
	background-color:#666;
	text-wrap:supress;
	
}
h1
{
	color:#FFFFFF;
}

.ex
{
	background-color:#99F;
	color:#660000;
	font:Verdana, Geneva, sans-serif;
	font-size:20px;
	text-align:right;
	
}
.ec
{
	background-color:#CCC;
	color:#660033;
	font:Arial, Helvetica, sans-serif;
	font-size:18px;
}
</style>


<script type="text/javascript">
var num1 = 0;
var ope = 0;
var num2 = 0;
var ek = 0

	function addOnScr1()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
		document.getElementById("nums").value = "";
		ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+1;
		document.getElementById("nums").value = txt;
	
	}

	function addOnScr2()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
		document.getElementById("nums").value = "";
		ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+2;
		document.getElementById("nums").value = txt;
	}	

	function addOnScr3()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+3;
		document.getElementById("nums").value = txt;
	}
	
	function addOnScr4()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+4;
		document.getElementById("nums").value = txt;
	}

	function addOnScr5()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+5;
		document.getElementById("nums").value = txt;
	}

	function addOnScr6()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+6;
		document.getElementById("nums").value = txt;
	}
	function addOnScr7()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+7;
		document.getElementById("nums").value = txt;
	}

	function addOnScr8()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+8;
		document.getElementById("nums").value = txt;
	}
	function addOnScr9()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+9;
		document.getElementById("nums").value = txt;
	}

	function addOnScr0()
	{
		document.getElementById("neg").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
	
		var txt = document.getElementById("nums").value;
		txt = txt+0;
		document.getElementById("nums").value = txt;
	}

	function addOnScrp()
	{
		document.getElementById("neg").disabled=true;
		document.getElementById("point").disabled=true;
		if((ek!=0))
		{
			document.getElementById("nums").value = "";
			ek = 0;
		}
		var txt = document.getElementById("nums").value;
		txt = txt+".";
		document.getElementById("nums").value = txt;
	}

	function addOnScrn()
	{
		var txt = document.getElementById("nums").value;
		txt = txt+"-";
		document.getElementById("nums").value = txt;
	}

	function add()
	{
		document.getElementById("neg").disabled=false;
		document.getElementById("point").disabled=false;
		ek=1;
		if(num1==0)
		{
			num1 = parseFloat(document.getElementById("nums").value);
		}
		else
		{
			ent();
		}
		ope = 1;
	
	}

	function diff()
	{
		document.getElementById("neg").disabled=false;
		document.getElementById("point").disabled=false;
		
		ek=1;
		if(num1==0)
		{
			num1 = parseFloat(document.getElementById("nums").value);
		}
		else
		{
			ent();
		}
		ope = 2;
	}

	function prod()
	{
		document.getElementById("neg").disabled=false;
		document.getElementById("point").disabled=false;
		
		ek=1;
		if(num1==0)
		{
			num1 = parseFloat(document.getElementById("nums").value);
		}
		else
		{
			ent();
		}
		ope = 3;
	}
	
	function quo()
	{
		document.getElementById("neg").disabled=false;
		document.getElementById("point").disabled=false;
		
		ek=1;
		if(num1==0)
		{
			num1 = parseFloat(document.getElementById("nums").value);
		}
		else
		{
			ent();
		}
		ope = 4;
	}

	function clr()
	{
		num1 = 0;
		num2 = 0;
		ope = 0;
		document.getElementById("nums").value = "";
		document.getElementById("neg").disabled=false;
		document.getElementById("point").disabled=false;
		ek = 0;
	}

	function ent()
	{
		ek = 1;
		var ans;
		num2 = parseFloat(document.getElementById("nums").value);
		switch(ope)
		{
			case 1:
				ans = num1 + num2;
				document.getElementById("nums").value = ans;
				num1 = ans;
				break;
			case 2:
				ans = num1 - num2;
				document.getElementById("nums").value = ans;
				num1 = ans;
				break;
			case 3:
				ans = num1 * num2;
				document.getElementById("nums").value = ans;
				num1 = ans;
				break;
			case 4:
				ans = num1 / num2;
				document.getElementById("nums").value = ans;
				num1 = ans;
				break;
			default:
				document.getElementById("nums").value = "???";	
		}
	}
	
	function enterz()
	{
		document.getElementById("neg").disabled=false;
		document.getElementById("point").disabled=false;
		
		ek = 1;
		var ans;
		num2 = parseFloat(document.getElementById("nums").value);
		switch(ope)
		{
			case 1:
				ans = num1 + num2;
				document.getElementById("nums").value = ans;
				num1 = 0;
				break;
			case 2:
				ans = num1 - num2;
				document.getElementById("nums").value = ans;
				num1 = 0;
				break;
			case 3:
				ans = num1 * num2;
				document.getElementById("nums").value = ans;
				num1 = 0;
				break;
			case 4:
				ans = num1 / num2;
				document.getElementById("nums").value = ans;
				num1 = 0;
				break;
			default:
				document.getElementById("nums").value = "???";	
		}	
	}



</script>
</head>
<body><center>
<form><h1>
Calculator</h1>
<table border="0">
<tr><th colspan="4"><input type="text" class = "ex" id = "nums" name = "nums"  /></th></tr>
<tr><td><button type="button" class = "ec" onclick="addOnScr1()">1</button></td>
<td><button type="button" class = "ec" onclick="addOnScr2()">2</button></td>
<td><button type="button" class = "ec" onclick="addOnScr3()">3</button></td>
<td><button type="button" class = "ec" onclick="add()">+</button></td>
</tr>

<tr><td><button type="button" class = "ec" onclick="addOnScr4()">4</button></td>
<td><button type="button"  class = "ec" onclick="addOnScr5()">5</button></td>
<td><button type="button" class = "ec" onclick="addOnScr6()">6</button></td>
<td><button type="button" class = "ec" onclick="diff()">--</button></td></tr>

<tr><td><button type="button" class = "ec" onclick="addOnScr7()">7</button></td>
<td><button type="button" class = "ec" onclick="addOnScr8()">8</button></td>
<td><button type="button" class = "ec" onclick="addOnScr9()">9</button></td>
<td><button type="button" class = "ec" onclick="prod()">*</button></td></tr>

<tr><td><button type="button" class = "ec" id="neg" onclick="addOnScrn()">-</button></td>
<td><button type="button" class = "ec" onclick="addOnScr0()">0</button></td>
<td><button type="button" class = "ec" id="point" onclick="addOnScrp()">.</button></td>
<td><button type="button" class = "ec" onclick="quo()">/</button></td></tr>

<tr><td></td> <td><button type="button" class = "ec" onclick="enterz()">=</button></td>
<td><button type="button" class = "ec" onclick="clr()">C</button></td><td> </td></tr>

</form>

</body>
</html>

Rate Calculator

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I'm currently revamping a website that was written in aspx. The problem i'm having is that the webpage is moving to a hosting company that doesn't support asp. I'm wanting to rebuild the calculator in javascript, however I have no javascript experience. I can figure some parts of the code out, however I don't really have time to learn it, and was wondering if someone would be willing to help.

The site i'm trying to change is:

http://sunflowertitle.com/ratecalculator.aspx

It shouldn't be that difficult to rebuild as its not a detailed calculator. I have all the original files if anyone needs them, i've been working on this for awhile and i'm to the point i'd be willing to pay someone to build it.

Help With Making Calculator

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I'm decent at JavaScript but I have no idea how I should go about making a calculator. So far I'll drop a bunch of buttons down that all onclick to a function (a,b) and then it will add or w/e then return. How would I incorporate multiple methods such as subtraction or multiplication though?

Basically I'm confident I the ability to code or learn to make this calculator, just have no idea how to set this up, thanks.

Bmi Calculator With Javascript

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I need help trying to figure out how to get my bmi calculator to work. I cant figure out what is wrong with my formula part and why it wont calculate the numbers you type in...pls help!

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>

<script type="text/javascript">

function calculateBMI()
{
var weight = numb(document.data.weight.value)
var height = numb(document.data.height.value)
var height2 = height2 * height2
var BMI = weight * 703 / (height2 * height2)

document.form.BodyMassIndex.value=custRound(BMI,1);
}

</script>
<title></title>

<style type="text/css">
div.c2 {text-align: center}
input.c1 {font-size: 8pt}
</style>
</head>
<body>
<div class="c2">
<form name="form" id="form"><input type="text" name="weight" size="4"> Weight (in Kilos) <input type="text" name="height" size="4"> Height (in Centimeters)<br>
<br>
<input type="text" name="BodyMassIndex" id="BodyMassIndex" size="4"> BMI <input type="button" class="c1" value="Calculate" onclick="calculateBMI()" name="button"> <input type="reset" class="c1" value="Clear Form"></form>
</div>
</body>
</html>

Very New To Js, Need Help With An Averages Calculator

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I have my first ever scholastic JS assignment and so far it's felt nearly impossible to get a grip on how to do it. I've gone through the W3c tutorials entirely 3 times now and still, nothing is clicking mentally. Generally I do better if I can reverse engineer already written code but I can't find anything similar enough to this on the net to figure it out.

The assignment is to create a grade averages calculator as seen in this pictu

Along with this starter code:
Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Assignments score calculator</title>
<style type="text/css">
<!--
.score {
    width: 30px;
}
-->
</style>
</head>

<body>
<h1>Assignments score calculator</h1>

<form id="calculator" name="calculator" method="post" action="">
<p>Enter your Name: 
  <label for="firstname"></label>
  <br />
  <input type="text" name="firstname" id="firstname" />
<p> 
  <label for="A1">Assignment #1 sco </label>
  <input name="A1" type="text" class="score" id="A1" maxlength="3" /><br />
<label for="A2">Assignment #2 sco </label>
  <input name="A2" type="text" class="score" id="A2" maxlength="3" /><br />
<label for="A3">Assignment #3 sco </label>
  <input name="A3" type="text" class="score" id="A3" maxlength="3" />
<p>
  <label for="button"></label>
  <input type="submit" name="Submit" id="Submit" value="Submit" xx="doCalculation(this.form.firstname.value,this.form.A1.value,this.form.A2.value,this.form.A3.value)" />
</form>
</body>
</html>

I understand what I need to do, just not the syntax to do it. Any help would be appreciated. Sorry for newbiness.

Interest Calculator

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What Am I Doing Wrong With My Calculator?

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I'm trying to get this calculator to work

html

Code:

<form name="Calc" id="calculator" style="position: fixed; top: 25px; right: 5px; background: #5F4A29;" action="">
  <table border="6">
    <tr>
      <td colspan="4"><input type="text" name="Input" size="25" onclick="calc(Calc); return true" /></td>
    </tr>
    <tr>
      <td><input class="button" type="button" name="clr" value="c" onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="(" value="(" onclick="calc(Calc)" /></td>
	  <td><input class="button" type="button" name=")" value=")" onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="equ" value="=" onclick="calc(Calc)" /></td>	  
    </tr>
    <tr>
      <td><input class="button" type="button" name="_1" value="1" onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="_2" value="2" onclick="calc(Calc)" /></td>
	  <td><input class="button" type="button" name="_3" value="3" onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="add" value="+" onclick="calc(Calc)" /></td>	  
    </tr>
    </tr>
    <tr>
      <td><input class="button" type="button" name="_4" value="4" onclick="calc(Calc) += '4'" /></td>
      <td><input class="button" type="button" name="_5" value="5" onclick="calc(Calc) += '5'" /></td>
	  <td><input class="button" type="button" name="_6" value="6" onclick="calc(Calc) += '6'" /></td>
      <td><input class="button" type="button" name="sub" value="-" onclick="calc(Calc)" /></td>	  
    </tr>
    <tr>
      <td><input class="button" type="button" name="_7" value="7" onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="_8" value="8" onclick="calc(Calc)" /></td>
	  <td><input class="button" type="button" name="_9" value="9" onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="mul" value="*" onclick="calc(Calc)" /></td>	  
    </tr>
    <tr>
      <td></td>
      <td><input class="button" type="button" name="_0" value="0" onclick="calc(Calc)" /></td>
	  <td><input class="button" type="button" name="dot" value="." onclick="calc(Calc)" /></td>
      <td><input class="button" type="button" name="div" value="/" onclick="calc(Calc)" /></td>	  
    </tr>
  </table>
</form>

and js

Code:

function calc(Calc)
{
var add = eval (document.Calc.add.value);
var sub = eval (document.Calc.sub.value);
var mul = eval (document.Calc.mul.value);
var div = eval (document.Calc.div.value);
var clr = eval (document.Calc.clr.value);
var _0 = eval (document.Calc._0.value);
var _1 = eval (document.Calc._1.value);
var _2 = eval (document.Calc._2.value);
var _3 = eval (document.Calc._3.value);
var _4 = eval (document.Calc._4.value);
var _5 = eval (document.Calc._5.value);
var _6 = eval (document.Calc._6.value);
var _7 = eval (document.Calc._7.value);
var _8 = eval (document.Calc._8.value);
var _9 = eval (document.Calc._9.value);
var dot = eval (document.Calc.dot.value);
var equ = eval (document.Calc.equ.value)

var output=Calc.Input.value=add+sub+mul+div+clr+_0+_1+_2+_3+_4+_5+_6+_7+_8+_9+dot+equ;

document.getElementById("calculator").innerHTML=output;
}

Can someone help me sort this out?

Almost Have My First Calculator Made

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So after some studying I have a pretty decent method using objects. I built it so that you hit the first number, then you would hit a plus or minus then the second number. The problem is just getting the buttons to define variables and run functions.

Quote:
<html>
<head>
<script type="text/javascript" >
x=10;
h=1;
var numbs = new Const(x)
function Const(one){
this.x=one;
ADD(this.x)
if(h=1){
function ADD(a){
y=5;
b=y+a;
alert(b);
}}}
</script>
</head>
<body>
<input type="button" value="1" onclick="needs to run all that AND set x=1 and h=1">
</body>
</html>
Also I plan on going back and making y, which is the second number you're adding, an object. For now I'm just setting it equal to something so I don't have to mess with it.

Trying To Get The Age Calculator Work

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already solved

Javascript Calculator

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I'm not sure what the code is to add this to javascript. I don't know if anyone can help me with this? Each numeric button should change the input box up at the top to whatever. When one of the operator buttons (+,-,*,/) is pressed, the value in the input box at the top should change to 0. Before an operator button is pressed, the value should be stored in a variable to keep track of the left-hand side of the equation. After it is pressed, the value should be stored in the right hand side variable.

Thanks

Cost Calculator Help!

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I want the calculator to take what was clicked display the item number and also the cost. (if possible i'd like to be able to display cost with no button) sorry if the code is messy i'm new to javascript.

Code:

<SCRIPT TYPE="TEXT/JAVASCRIPT">
// Definitions
var in2 = ""
var in3 = ""
//costs
var $mat = ""
var cmat = Number($mat)
var $sqft = ""
var csf = Number($sqft)
var chngcost = cmat*csf
var $coga = 30
var $cos = 40
var $coshp = 15
var $total = chngcost + $coga + $cos + $coshp
// Add a letter to string
function itemnumber2(numb) {
  in2 = numb
  document.myform.i2.value = in2
  document.itemnumber.i2.value = in2
  if (in2 == "10") {
$mat = 3
document.myform.cmat1.value = $mat
}
if (in2 == "11") {
$mat = 6
document.myform.cmat1.value = $mat
}
if (in2 == "12") {
$mat = 12
document.myform.cmat1.value = $mat
}
}
function itemnumber3(numb) {
  in3 = numb
  document.myform.i3.value = in3
  document.itemnumber.i3.value = in3
  if (in3 == "1") {
$sqft = 7.5
document.myform.sqrf1.value = $sqft
}
if (in3 == "2") {
$sqft = 5.5
document.myform.sqrf1.value = $sqft
}
if (in3 == "3") {
$sqft = 5
document.myform.sqrf1.value = $sqft
}
}
//total cost function
function totalcost() {
  ttc1 = $total
  document.myform.ttc.value = ttc1
}
</SCRIPT>

Code:

<input type="radio" id="10" name="Size" value="18x22" onclick="itemnumber2(10)"> 18" X 22"<br>
<input type="radio" id="11" name="Size" value="24x36" onclick="itemnumber2(11)"> 24" X 36"<br>
<input type="radio" id="12" name="Size" value="36x48" onclick="itemnumber2(12)"> 36" X 48"<br>

Code:

<input type="radio" id="1" name="Material" value="Photo Gloss" onclick="itemnumber3(1)"> Photo Gloss<br>
<input type="radio" id="2" name="Material" value="Bond Laminate" onclick="itemnumber3(2)"> Bond Laminate<br>
<input type="radio" id="3" name="Material" value="Photo Gloss" onclick="itemnumber3(3)"> Vinyl<br>

Code:

<form name="itemnumber" action="#">
<span class="style6">Item # <input type="text" size="3" name="i1" value="101" disabled>-
<input type="text" size="2" name="i2" disabled>-<input type="text" size="1" name="i3" disabled></span></p>
</form>

Code:

<input name="cost" type="button" onclick="totalcost()" value="Cost"> 
$<input type="text" size="5" name="ttc" disabled>

Day Of The Week Calculator Help

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Hi there, me again.

Need help with this bit of code. The script itself I got from the JS Source, and modified it myself a bit so that instead of the user inputting their DOB via a prompt box, it could be entered via dropdown lists. I attempted to do this, but have come across a problem. For some reason, the result always (or at least, that's what it looks like to me) appears to be the array index element of [4], i.e. Friday. Not really sure why this is, but no matter what date is entered out of the example dates shown below in the HTML, the result is always Friday. Double-checked on another similiar calculator script online, and sure enough, the results are wrong. So it's a problem with my script. Except I can't identify it. So any help from Old Pedant/Philip M, or whoever else on the forum has the patience to help me , would be much appreciated.

Code:

<script type="text/javascript" language="javascript">
function findDay() {
  var arr = new Array();
  arr[0] = "Monday";
  arr[1] = "Tuesday";
  arr[2] = "Wednesday";
  arr[3] = "Thursday";
  arr[4] = "Friday";
  arr[5] = "Saturday";
  arr[6] = "Sunday";
  var selectdate = document.getElementById("selectdate").selectedIndex;
  var selectmonth = document.getElementById("selectmonth").selectedIndex;
  var selectyear = document.getElementById("selectyear").selectedIndex;
  var birthday = new Date(selectdate + selectmonth + selectyear);
  var day = birthday.getDay();
  document.getElementById("div1").innerHTML = "You were born on a " + arr[day] + "!"
}
</script>

Code:

<html>
<h1>Day Of The Week?</h1>
Input your date of birth, and click the Go button to find out what day of the week you were born on.
<hr/>
<form style="text-align: center;">

<select id="selectdate">
<option>1</option>
<option>2</option>
<option>3</option>
</select>

<select id="selectmonth">
<option>January</option>
<option>February</option>
<option>March</option>
</select>

<select id="selectyear">
<option>1995</option>
<option>1996</option>
<option>1997</option>
</select>
<br/>
<br />
<input align="middle" type="button" value="Go" onclick="findDay()">
</form>
<div id="div1"></div>
</html>

Need Help With Simple Calculator

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I have been having problems adding checkboxes and option selects in the same function..

Here's what I have.

Code:

  <script type="text/javascript">
        function bonuscalc() {
            var aaaa = document.getElementById("aaaa").value;
            var bbbb = document.getElementById("bbbb").value;
	    var cccc = document.getElementById("cccc").value;
	    if (dddd.checked){
		var dddd = document.dddd.value = 2;
		} 
		else {
		var dddd = document.dddd.value = 1;
		}
	    var eeee = document.getElementById("eeee").value;
            var bonus = aaaa* bbbb * dddd * cccc * eeee;
	    var roundbonus = Math.round(bonus*10)/10;
            
            document.getElementById("roundbonus").value = roundbonus;
        }

    </script>

Javascript first.. The part I'm not sure about is the if/else part for checbox.

Now the html:

Code:

<form action="" id="calc1">
<table width="100%">
<tbody>
<tr>
<td>A status:   <select id="aaaa">
      		 		<option value="1.1">A1</option>
        	    	        <option value="1.02">A2</option>
        			<option value="1">A3</option>
        			<option value="0.95">A4</option>
   				</select>  
</td>   
 <td>B status: <select id="bbbb">
                        <option value="1">0%</option>
                        <option value="0.99">1%</option>
                        <option value="0.98">2%</option>
                        <option value="0.97">3%</option>
                        <option value="0.96">4%</option>
                        <option value="0.95">5%</option>
                        <option value="0.94">6%</option>
                        <option value="0.93">7%</option>
                        <option value="0.92">8%</option>
                        <option value="0.91">9%</option>
                        <option value="0.90">10%</option> 
                      </select>    
</td>
            
<td>E status:<input id="eeee" type="text" />
</td>

<td>D status:   <input id="dddd" name="dddd" type="checkbox">
</td>
                
<td>C status:   <select id="cccc">
        	          <option value="1">No</option>
                          <option value="1.2">Yes</option>
   		        </select>
</td>
</tr>                          
<tr>
<td width="100%">
     <input type="button" value="Submit" onclick="bonuscalc()" />
     <br /> 
 Result: <input type="text" readonly="readonly" id="roundbonus" />
</td>
</tr>
</tbody>
</table>
</form>

I hope it's not too confusing.
The idea is to assign value 2 if the checkbox is checked and value 1 is it isn't..

Need Help On Javascript Calculator

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Hi all master and expert coders

I am working on a calculator which using the instructor's codes from the school. The problem that I having right now is the operator. I have successfully complete only the addition, but could not manage on subtraction and the rest operator. I hope experienced codes would help me out on this. Below is my codes.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<script type="text/javascript">
function calculate() {
var value1 = parseInt(validate(document.getElementById("value1").value));
var value2 = parseInt(validate(document.getElementById("value2").value));
radioButtonCheck();
checkboxCheck();
dropDownListCheck();
document.getElementById("result").value = addition(value1, value2);
document.getElementById("result").value = subtraction(value1, value2);
document.getElementById("result").value = multiplication(value1, value2);
document.getElementById("result").value = division(value1, value2);
}

function validate(value) {
if (value == null || value == "") {
alert("Required Field");
return 0;
} else if (isNaN(value)) {
alert("Must be a number");
return 0;
}
else return value;
}

function addition(value1, value2){
return value1 + value2;
}
// trying to use the same addition return statement but fail.
function radioButtonCheck() {
if ((document.getElementById("radio1").checked == false)
&& (document.getElemtById("radio2").checked == false)) {
alert("Please select a radio button");
valid = false;
}
}
function checkboxCheck() {
if ((document.getElementById("cbox1").checked == false)
&& (document.getElementById("cbox2").checked == false)) {
alert("Please select a checkbox");
valid = false;
}
}
function dropDownListCheck() {
if ((document.getElementById("ddlOperator").selectedIndex == 0)) {
alert("Please select a operator");
valid = false;
}
}

</script>

<title>Calculator By Alsus</title>
</head>
<body>
<h2>Calculator</h2>
<table border = "1">
<tr>
<td>Value 1:</td>
<td><input type="text" id="value1" name="value1" /></td>
</tr>
<tr>
<td>Value 2:</td>
<td><input type="text" id="value2" name="value2" /></td>
</tr>
<tr>
<td>Operator:</td>
<td><input type="text" id="Operator" name="Operator" /></td>
</tr>
<tr>
<td><input type="radio" id="radio1" name="radio1" value="radio1" />Radio1<br /></td>
<td><input type="radio" id="radio2" name="radio2" value="radio2" />Radio2<br /></td>
</tr>
<tr>
<td><input type="checkbox" id="cbox1" name="cbox1" value="cbox1" />Checkbox 1<br /></td>
<td><input type="checkbox" id="cbox2" name="cbox2" value="cbox2" />Checkbox 2<br /></td>
</tr>
<tr>
<td>
<select id="ddlSelect">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
</td>
<td> </td>
</tr>
<tr>
<td>Result:</td>
<td><input type="text" id="result" name="result" /></td>
</tr>
</table>
<input type="submit" id="btn_sub" name="btn_sub" value="Submit" onclick="calculate()" />
<input type="reset" id="btn_res" name="btn_res" value="Reset" />
</body>
</html>

Calculator Question

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Hi everyone, I am currently doing a project with a calculator and I am having a bit of trouble trying to figure something out and was wondering if I could get some help with it or possibly even a good site to read up on it.

I am trying to make it so my calculator is disabled on startup. I can only seem to get my textbox disabled but I need everything disabled except the ON button.. so whey they click the ON button everything is enabled. when they click the OFF button everything is wiped and disabled..

I'm not to familiar with that yet so all the help is greatly appreciated..

I'm not sure if I'm going on the right direction with this but heres my code...

Code:

var value

function start() {
 form1.tb1.disabled = true;
 }
 onload = start;
 function enable() {
 form1.tb1.disabled = false
 }

function shownumber(value){
document.form1.tb1.value=document.form1.tb1.value+value
document.form1.plus.disabled=false
document.form1.minus.disabled=false
document.form1.times.disabled=false
document.form1.divide.disabled=false

}

function showoperator(value){
document.form1.tb1.value=document.form1.tb1.value+value
}

function evalit(){
document.form1.tb1.value=eval(document.form1.tb1.value)

}

and my body is

Code:

<table width="210" border="1" bgcolor="#0000">
<form name="form1">
      <tr>
        <td align="center">
          <table width="173" border="0" cellspacing="0" cellpadding="0" height="130">
            <tr>
            </tr>
            <tr>
              <td colspan="3">
                <input type="text" name="tb1" size="20">
              </td>
              <td width="53" height="0"> <font color="#FFFFFF">
                <input type="button" name="clear" value="   c   "
            onClick="document.form1.tb1.value=''">
                </font></td>
            </tr>
            <tr>
              <td width="53" height="0">
                <input type="button" name="7" value="   7   "
            onClick="shownumber('7')">
              </td>
              <td width="53" height="0">
                <input type="button" name="eight" value="   8   "
            onClick="shownumber('8')">
              </td>
              <td width="53" height="0">
                <input type="button" name="nine" value="   9   "
            onClick="shownumber('9')">
              </td>
              <td width="53" height="0"> <font color="#FFFFFF">
            <input type="button" value="   /    " name="divide"
            onClick="showoperator('/')">
                </font></td>
            </tr>
            <tr>
              <td width="53" height="0">
                <input type="button" name="four" value="   4   "
            onClick="shownumber('4')">
              </td>
              <td width="53" height="0">
                <input type="button" name="five" value="   5   "
            onClick="shownumber('5')">
              </td>
              <td width="53" height="0">
                <input type="button" name="six" value="   6   "
            onClick="shownumber('6')">
              </td>
              <td width="53" height="0"> <font color="#FFFFFF">
                <input type="button" name="times" value="   x   "
            onClick="showoperator('*')">
                </font></td>
            </tr>
            <tr>
              <td width="53" height="0">
                <input type="button" name="one" value="   1   "
            onClick="shownumber('1')">
              </td>
              <td width="53" height="0">
                <input type="button" name="two" value="   2   "
            onClick="shownumber('2')">
              </td>
              <td width="54" height="0">
                <input type="button" name="three" value="   3   "
            onClick="shownumber('3')">
              </td>
              <td width="72" height="0"> <font color="#FFFFFF">
                <input type="button" name="minus" value="    -   "
            onClick="showoperator('-')">
                </font></td>
            </tr>
            <tr>
              <td width="53" height="0">
                <input type="button" name="zero" value="   0   "
            onClick="shownumber('0')">
              </td>
              <td width="53" height="0"> </td>
              <td width="54" height="0">
                   <input type="button" value="    +   " name="plus"
            onClick="showoperator('+')">
              </td>
              <td width="72" height="0"> <font color="#FFFFFF">
                <input type="button" name="calculate" value="   =   "
            onClick="evalit()"
                </font></td>
                 <tr>
                <td> <input type="button" id="but1" value="On" onClick="enable();">  <input type="button" id="button2" value="Off">
             </td>
            </tr>
          </table>
        </td>
      </tr>
    </form>
</body>
</html>