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JavaScript - Fixed Interest Calculator
This is compound.
Code: //compound interest
function checkNumber2(input, min, max, msg)
{
msg = msg + " field has invalid data: " + input.value;
var str = input.value;
for (var i = 0; i < str.length; i++)
{
var ch = str.substring(i, i + 1)
if ((ch < "0" || "9" < ch) && ch != '.')
{
alert(msg);
return false;
}
}
var num = parseFloat(str)
if (num < min || max < num)
{
alert(msg + " not in range [" + min + ".." + max + "]");
return false;
}
input.value = str;
return true;
}
function computeField2(input)
{
if (input.value != null && input.value.length != 0)
input.value = "" + eval(input.value);
computeForm(input.form);
}
function computeForm2(form)
{
if ((form.payments.value == null || form.payments.value.length == 0) ||
(form.interest.value == null || form.interest.value.length == 0) ||
(form.principal.value == null || form.principal.value.length == 0))
{
return;
}
if (!checkNumber(form.payments, 1, 480, "# of payments") ||
!checkNumber(form.interest, .001, 99, "Interest") ||
!checkNumber(form.principal, 0, 10000000, "Principal"))
{
form.payment.value = "Invalid";
return;
}
var i = form.interest.value;
if (i > 1.0)
{
i = i / 100.0;
form.interest.value = i;
}
i /=12;
var pow=1;
for (var j=0; j < form.payments.value; j++)
pow=pow * (1 + i);
money="" + .01* Math.round(100*(form.principal.value * pow * i) / (pow - 1));
dec=money.indexOf(".");
dollars = money.substring(0,dec);
cents=money.substring(dec+1,dec+3);
cents=(cents.length < 2) ? cents + "0" : cents;
money=dollars + "." + cents;
form.payment.value = money;
}
function clearForm2(form)
{
form.payments.value = "";
form.interest.value = "";
form.principal.value = "";
}
//STOP compound interest
I'm not a mathmatician (or english major). what do I need to change to make this for fixed interest? Thanks in advance and I didn't know she was your sister in advance. Similar TutorialsI've been working on this for a few days now and I'm not sure if it could be done or not. I'm trying to do the following complex formula in Adobe Acrobat. I want to be able to calculate tInterest (Total Interest Due) = fDays (# of days) * .0002739726 (interest rate) * PrincipalAmt (principal) but ONLY IF fDays > 90 or if CheckBox1 is checked then fDays > 180, otherwise tInterest = 0. See, I'm trying to create a form where the interest is only to be calculated if 90 days has elapsed OR 180 days has elapsed if checked off.Either way, interest is to be calculated from StartDate. Is this possible? 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>
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);"> ');
}else if(x>9 && x<12){
document.write('<input type="button" size="30" name="'+btname+'" value="'+sign+'" onClick="calc(this);"> ');
}
if(x==2 || x == 5 || x == 8){
document.write('<br>');
}
}
document.write('</form>');
}
scalc();
</script>
ANY help is GREATLY appreciated! Hi , this is my bmi calculator script <HEAD> <script type="text/javascript"> <!-- Begin script of spillo3000 function calculateBMI() { var weight = eval(document.form.weight.value) var height = eval(document.form.height.value) var height2 = height / 100 var BMI = weight / (height2 * height2) if(weight == "" || isNaN(weight) || height2 == "" || isNaN(height2)) { alert("inserisci un valore"); return; } else { document.form.BodyMassIndex.value=custRound(BMI,1); if(BMI < 18.5) { document.getElementById('feedback').innerHTML = 'Underweight '; }else if(BMI >=18.5 && BMI < 29.9) { document.getElementById('feedback').innerHTML = 'Normal '; }else if(BMI > 29.9) { document.getElementById('feedback').innerHTML = 'Overweight '; } } } function custRound(x,places) { return (Math.round(x*Math.pow(10,places)))/Math.pow(10,places) } function resetAll(){ document.getElementById('feedback').innerHTML=""; return true; } // End --> </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 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> 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! 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? aaaaaa
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 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. I am working on an Mpg calculator and I am stuck any input would be greatly appreciated. Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Gas Mileage</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<script type = "text/javascript">
/*<![CDATA[*/
function calcMPG()
{
var startMiles= document.forms[0].startingMileage.value;
var endMiles= document.forms[0].endingMileage.value;
var gallons=document.forms[0].gallons.value;
if(isNaN(startMiles)
isNaN(endMiles))
isNaN(gallons))
{
window.alert("You must enter a number");
}
else
{
if (gallons > 0)
{
document.forms[0].gallons.value= ((endMiles-startMiles)/gallons).toFixed(1);
}
}
}
/*]]>*/
</script>
</head>
<body>
<script type = "text/javascript">
/*<![CDATA[*/
document.write("<p><h1>Miles Per Gallon Calculator</h2></p>");
document.write("<p><h3>You must enter your starting and ending mileage and gallons used.</h3></p>");
/*]]>*/
</script>
<form action="">
<p> Starting Mileage<br />
<input type="text" name="startingMileage" value="0" onchange="calcMPG()" /> </p>
<p> Ending Mileage <br />
<input type="text" name="endingMileage" value="0" onchange="calcMPG()" /></p>
<p>Gallons Used<br />
<input type="text" name="gallons" value="0" onchange="calcMPG()"/></p>
<p>Miles Per Gallon<br />
<input type="text" name="miles per gallon" value="0" /></p>
</form>
</body>
</html>
I have a mistake when it is suppose to calculate. Thanks to all 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. 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>
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. already solved
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. 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. 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> 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> |
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