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JavaScript - Question About A Website Calculator
This website calculates r-score (it's a type of formula that is used with number in Quebec Cegep's): http://rscore.x10.mx/
Anyhow, I looked at the source and saw that he identified each text box a variable and submit puts it all together to give r-score. But where is the formula used to calculate the r-score listed in the source? Like when I look through the source I see it takes the "High school average" variable, the "class average" variable, etc. and then when I click submit, it gives me a number, but what is it doing with all these variables to get these numbers? Has he hidden the calculation formula or am I blind? Thanks! Similar TutorialsHello, I'm new here but not new to programming, I do some but only basic stuff. I know I could do this project in other languages but I'm not good with Java yet which seems like it would be the best for this request.. I am trying to implement a time calculator onto my website with preset times to tell how long it would take to make troops. Say you want to make 100 Catapults and each Catapult takes one minute and ten seconds to make, I would like to be able to show the time in days/hours/minutes preferably in the format of 0:00:00. I would like it so someone can type in the amount of troops they want. There are Infantry that take 0:00:22, Cavalry that take 0:00:52, Archers that take 0:00:35 and Catapults that take 0:01:10. I have tried to do this and search for things that could help but I didn't find much.. It would be greatly appreciated if someone could help me with this. 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>
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! 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 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 , 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 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> 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 have a formula done in PHP. Lets say it's PHP Code: $sum = $_POST['one'] + $_POST['two']; I have 2 textboxes, one named "one", the other named "two". I want the page to also display the answer under the text boxes but it updates in real time when you input a value into the textboxes. How would I do that? This is what I have so far, but now I am stuck. My instructor wants the output value (Number Set C) to include Number Set A and Number Set B. For instance, if Number Set A is "10" and you want to add Number Set B whose value is also "10", my instructor wants Number Set C to say "10 + 10 = 20". Where am I going wrong, and what is the easiest way I can make this work while making as little changes as possible? Most of the code is what my instructor requires us to use. Code: <HTML>
<HEAD>
<TITLE>COMSC-100-1241 - Assignment #8 - Introducing "if" Logic - Programming Your Own Calculator</TITLE>
<SCRIPT LANGUAGE="text/JavaScript">
function Go(code){
var a
var b
var c
var x
a = parseFloat(document.getElementById("a").value);
b = parseFloat(document.getElementById("b").value);
if (code == 0){
x = a + b
c = a + " + " + b + " = " + x
}
if (code == 1){
x = a - b
c = a + " - " + b + " = " + x
}
if (code == 2){
x = a * b
c = a + " * " + b + " = " + x
}
if (code == 3){
x = a / b
c = a + " / " + b + " = " + x
}
document.getElementById("c").value = c;
}
</SCRIPT>
</HEAD>
<BODY>
<TABLE BORDER="1" WIDTH="500" ALIGN="center">
<TR>
<TD>
<DIV ALIGN="left">
<FORM NAME="calculator">
<B>Instructions: </B> Type a number in the box for "Number Set #1". Then input a <I>second</I> number in the box for "Number Set #2". Click the "Calculate" button, and the sum of those two numbers will appear in the box for "Number Set #3".
<BR>
<BR>
<B>Input Values: </B>
<BR>
<B>Number Set A:</B> <INPUT ID="a">
<BR><BR>
<B>Number Set B:</B> <INPUT ID="b" >
<BR><BR>
<INPUT TYPE="Submit" VALUE="Add" OnClick="Go(0);">
<INPUT TYPE="Submit" VALUE="Subtract" OnClick="Go(1);">
<INPUT TYPE="Submit" VALUE="Multiply" OnClick="Go(2);">
<INPUT TYPE="Submit" VALUE="Divide" OnClick="Go(3);">
<BR><BR>
<B>Output Value: </B>
<BR>
<B>Number Set C:</B> <INPUT ID="c" SIZE="50">
</FORM>
</DIV>
</FORM>
</TD>
</TR>
</TABLE>
</BODY>
</HTML>
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> aaaaaa
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> Hello guys, long story short my boss wants me to add this calculator form to our website(here is the link to what he wants exactly) so I try to copy that code but it won't work. I was wondering if this javascript would work. Code: Code: <script language="JavaScript">
function calc() {
gear = document.name1.drpPumpType.1;
vane = document.name1.drpPumpType.2;
if (gear)
{
txtW = document.form1.txtW.value;
txtD = document.form1.txtD.value;
txtL = document.form1.txtL.value;
int gearCIR;
gearCIR = 6 * txtW *(2 * txtD - txtL) * (txtL - txtD) / 2;
}
else
{
int vaneCIR;
vaneCIR = 12 * txtW * (txtL + txtD) / 4 * (txtL - txtD) / 2;
}
I probably don't even need a if statement but I haven't program in a long time and never use java script before. so bare with me. here is the html form code Code: Code: <form name="name1"> <table align="center" border="0" width="44%"> <tbody> <tr> <td colspan="3"><span class="BoldHeadingLabel style1">Displacement from Measurements</span></td></tr> <tr> <td width="50"><span class="style1"></span><br /> </td> <td width="157"><span class="BoldLabel style1">Pump/Motor Type:</span></td> <td width="456"> <span class="style1"></span> <br /> </td></tr> <tr> <td width="50"><span class="style1"></span><br /> </td> <td width="157"><span class="BoldLabel style1">Gear Width (W):</span></td> <td><span class="style1"><input name="txtW" id="txtW" maxlength="10" size="10" value="" type="text" /></span></td></tr> <tr> <td width="50"><span class="style1"></span><br /> </td> <td width="157"><span class="BoldLabel style1">Gear Bore Dia. (D):</span></td> <td><span class="style1"><input name="txtD" id="txtD" maxlength="10" size="10" value="" type="text" /></span></td></tr> <tr> <td width="50"><span class="style1"></span><br /> </td> <td width="157"><span class="BoldLabel style1">Bore to Bore (L):</span></td> <td><span class="style1"><input name="txtL" id="txtL" maxlength="10" size="10" value="" type="text" /></span></td></tr> <tr> <td colspan="3"><span class="style1"></span><br /> </td></tr> <tr> <td width="50"><span class="style1"></span><br /> </td> <td width="157"><span class="BoldLabel style1">Displacement (CIR) = </span></td> <td><span class="CalAnswer style1">_________</span><span class="style1"><br /> </span></td></tr> <tr></tr> <tr> <td colspan="3"><span class="style1"></span><br /> </td></tr> <tr> <td colspan="3" align="center"><input value="Calculate" id="submit1" name="submit1" type="submit" /> <input value="Clear" id="clearform" name="clearform" onclick="cmdReset_onclick()" type="button" /> </td></tr></tbody></table></form> For some reason it says access denied. I copy this code from that website. but can't find any code wrong. I know this code is probably so wrong but any help is much appreciated . 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 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 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.. 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. |
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