I cant get everything centered.
this is what i get:
xxx xxx xxx xxx xxx
what I want is
xxx
xxx
xxx
xxx
xxx
centered horizonally in the webpage
I also cant get the average functionality to work.I dont know where I am going wrong.
<!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>Average Calculator</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<h1 style="text-align:center;">My Average Calculator</h1>
<script type="text/javascript">
function getTotal() {
var form = document.getElementById('number');
var numb1 = parseInt(form.numb1.value);
var numb2 = parseInt(form.numb2.value);
var numb3 = parseInt(form.numb3.value);
var numb4 = parseInt(form.numb4.value);
var numb5 = parseInt(form.numb5.value);
var total = document.getElementById('total');
var average = document.getElementById('average');
if (!numb1) {
numb1 = 0;
}
if (!numb2) {
numb2 = 0;
}
if (!numb3) {
numb3 = 0;
}
if (!numb4) {
numb4 = 0;
}
if (!numb5) {
numb5 = 0;
}
total.innerHTML = 'Total: ' + (numb1 + numb2 + numb3 + numb4 + numb5);
average.innerHTML = 'Average: ' + (total / 5);
}
</script>
</head>
<form id="number">
<body>
First Number: <input type="text" name="numb1" onkeyup="getTotal ();" />
Second Number: <input type="text" name="numb2" onkeyup="getTotal();" />
Third Number: <input type="text" name="numb3" onkeyup="getTotal();" />
Fourth Number: <input type="text" name="numb4" onkeyup="getTotal();" />
Fifth Number: <input type="text" name="numb5" onkeyup="getTotal();" />
<div id="total">Total: </div>
<div id="average">Average: </div>
</body>
</html>
total / 5, where total is an element you fetched by ID. No wonder it doesn't work ;)
Also, you may want to learn about loops. Instead of numb1 through numb5, iterate.
Something like this could work nicely:
<fieldset id="numbers"><legend>Numbers</legend>
First number: <input type="number" onkeyup="getTotal();" onchange="getTotal();" /><br />
Second number: <input type="number" onkeyup="getTotal();" onchange="getTotal();" /><br />
Third number: <input type="number" onkeyup="getTotal();" onchange="getTotal();" /><br />
Fourth number: <input type="number" onkeyup="getTotal();" onchange="getTotal();" /><br />
Fifth number: <input type="number" onkeyup="getTotal();" onchange="getTotal();" />
</fieldset>
<div id="total">Total: --</div>
<div id="average">Average: --</div>
<script type="text/javascript">
function getTotal() {
var inputs = document.getElementById('numbers').getElementsByTagName('input'),
count = inputs.length, i, total = 0;
for( i=0; i<count; i++) total += parseInt(inputs[i].value || "0",10);
document.getElementById('total').firstChild.nodeValue = "Total: "+total;
document.getElementById('average').firstChild.nodeValue = "Average: "+(total/count);
}
</script>
add BR tag <br/> at the end of every input tag
and change this
average.innerHTML = 'Average: ' + ((numb1 + numb2 + numb3 + numb4 + numb5) / 5);
Related
<!DOCTYPE html>
<html>
<head>
<title>Grade Calculator</title>
<script>
function doubleMe()
{
var number;
var total;
number = document.getElementById('txtnumber').value;
number = Number(number);
total = number * 2;
console.log("number(): " + number + " " + total);
number = document.getElementById('txtnumber').value;
number = parseInt(number);
total = number * 2;
console.log("parseInt(): " + number + " " + total);
number = document.getElementById('txtnumber').value;
number = parseFloat(number);
total = number * 2;
console.log("parseFloat(): " + number + " " + total);
document.getElementById('divOutput').innerHTML = total;
}
</script>
</head>
<body>
<h1>Grade Calculator</h1>
Term 1 Mark: <input type = 'text' id = 'txtnumber' /><br><br>
Term 2 Mark: <input type = 'text' id = 'txtnumber' /><br><br>
Term 3 Mark: <input type = 'text' id = 'txtnumber' /><br><br>
Final Exam Mark: <input type = 'text' id = 'txtnumber' /><br><br>
Term 1 Percentage: <input type = 'text' id = 'txtnumber' /><br><br>
Term 2 Percentage: <input type = 'text' id = 'txtnumber' /><br><br>
Term 3 Percentage: <input type = 'text' id = 'txtnumber' /><br><br>
<input type = 'button' value = 'Press Me' onclick = 'doubleMe();' /><br><br>
<div id = 'divOutput'></div>
</body>
</html>
Hi, I'm suppose to be making a Grading calculator where you input your scores and percentages and once you click "press me" it adds up all of your grades and gives you your final grade. But I can't seem to get to work, can someone help me out? please and thank you!
I have made some tweaks into your code where it will take input of Term 1,Term 2, Term 3 & Final Term marks. And will return sum & percentage of them considering marks for each term is out of 100.
<!DOCTYPE html>
<html>
<head>
<title>Grade Calculator</title>
</head>
<body>
<h1>Grade Calculator</h1>
Term 1 Mark: <input type="text" id="txtnumber1" /><br /><br />
Term 2 Mark: <input type="text" id="txtnumber2" /><br /><br />
Term 3 Mark: <input type="text" id="txtnumber3" /><br /><br />
Final Exam Mark: <input type="text" id="txtnumber4" /><br /><br />
Term 1 Percentage: <input type="text" id="txtnumber5" /><br /><br />
Term 2 Percentage: <input type="text" id="txtnumber6" /><br /><br />
Term 3 Percentage: <input type="text" id="txtnumber7" /><br /><br />
<input type="button" value="Press Me" onclick="percentage();" /><br /><br />
<div id="divOutpuTotal"></div>
<div id="divOutputPercentage"></div>
<script>
function percentage() {
var total;
var total =
Number(document.getElementById("txtnumber1").value) +
Number(document.getElementById("txtnumber2").value) +
Number(document.getElementById("txtnumber3").value) +
Number(document.getElementById("txtnumber4").value);
document.getElementById("divOutpuTotal").innerHTML = total;
document.getElementById("divOutputPercentage").innerHTML = total / 4;
}
</script>
</body>
</html>
You can improve logic more based on your specific requirement.
Hello I have a problem with such a task I totally don't know how to get down to it, I hope someone will help me to write an application allowing to calculate the sum and the difference of two 2-dimensional numerical tables. Each of these tables should have 2 lines and 3 columns. Input data - the values of individual array elements - enter the keypads. Present the results on screen, on the same website.
My code is below:
<!DOCTYPE html>
<html lang="pl">
<head>
<title> JavaScript: tablice 2-wymiarowe. </title>
<meta charset="UTF-8">
</head>
<body>
<form id="form1">
Podaj 12 liczb <br />
Pierwsza: <input id="input1" type="text" value="1" /><br />
Druga: <input id="input2" type="text" value="2" /><br />
Trzecia: <input id="input3" type="text" value="3" /><br />
Czwarta: <input id="input4" type="text" value="4" /><br />
piata: <input id="input5" type="text" value="5" /><br />
szosta: <input id="input6" type="text" value="6" /><br />
</form>
<button onclick="przetwarzanie();"> Oblicz </button>
<div id="div1"> </div>
<script>
function przetwarzanie() {
var input1 = document.getElementById("input1");
var input2 = document.getElementById("input2");
var input3 = document.getElementById("input3");
var input4 = document.getElementById("input4");
var input5 = document.getElementById("input5");
var input6 = document.getElementById("input6");
var div1 = document.getElementById("div1");
var tablica = [];
tablica[0] = Number(input1.value, input2.value, input3.value);
tablica[1] = Number(input4.value, input5.value, input6.value);
suma = tablica[0] + tablica[1];
}
document.getElementById("div1").innerHTML = "Suma = " + suma;
</script>
</body>
</html>
First of all the last line of your script is outside the function while it uses a variable that is inside, this will not work but can easily be fixed by moving the line inside the function.
The second issue is that Number converts a string to a number. It does not sum them up. Instead move each input value to it's own Number function and add them together with the + sign.
For the difference in the two numbers you can just subtract one from the other. With Math.abs() we turn the number into a positive. This way we don't need to think about which of the two numbers is higher.
<!DOCTYPE html>
<html lang="pl">
<head>
<title> JavaScript: tablice 2-wymiarowe. </title>
<meta charset="UTF-8">
</head>
<body>
<form id="form1">
Podaj 12 liczb <br />
Pierwsza: <input id="input1" type="text" value="1" /><br />
Druga: <input id="input2" type="text" value="2" /><br />
Trzecia: <input id="input3" type="text" value="3" /><br />
Czwarta: <input id="input4" type="text" value="4" /><br />
piata: <input id="input5" type="text" value="5" /><br />
szosta: <input id="input6" type="text" value="6" /><br />
</form>
<button onclick="przetwarzanie();"> Oblicz </button>
<div id="div1"> </div>
<div id="div2"> </div>
<script>
function przetwarzanie() {
var input1 = document.getElementById("input1");
var input2 = document.getElementById("input2");
var input3 = document.getElementById("input3");
var input4 = document.getElementById("input4");
var input5 = document.getElementById("input5");
var input6 = document.getElementById("input6");
var div1 = document.getElementById("div1");
var tablica = [];
tablica[0] = Number(input1.value) + Number(input2.value) + Number(input3.value);
tablica[1] = Number(input4.value) + Number(input5.value) + Number(input6.value);
var suma = tablica[0] + tablica[1];
var roznica = Math.abs(tablica[0] - tablica[1]);
document.getElementById("div1").innerHTML = "Suma = " + suma;
document.getElementById("div2").innerHTML = "Różnica = " + roznica;
}
</script>
</body>
</html>
Suma undefined means you never created a variable and then you used it which caused the error below code is working just put all your code inside onclick function so when clicked it calculates and add it to html.
<!DOCTYPE html>
<html lang="pl">
<head>
<title> JavaScript: tablice 2-wymiarowe. </title>
<meta charset="UTF-8">
</head>
<body>
<form id="form1">
Podaj 12 liczb <br />
Pierwsza: <input id="input1" type="text" value="1" /><br />
Druga: <input id="input2" type="text" value="2" /><br />
Trzecia: <input id="input3" type="text" value="3" /><br />
Czwarta: <input id="input4" type="text" value="4" /><br />
piata: <input id="input5" type="text" value="5" /><br />
szosta: <input id="input6" type="text" value="6" /><br />
</form>
<button onclick="przetwarzanie();"> Oblicz </button>
<div id="div1"> </div>
<script>
function przetwarzanie() {
var input1 = document.getElementById("input1");
var input2 = document.getElementById("input2");
var input3 = document.getElementById("input3");
var input4 = document.getElementById("input4");
var input5 = document.getElementById("input5");
var input6 = document.getElementById("input6");
var div1 = document.getElementById("div1");
var tablica = [];
tablica[0] = Number(input1.value, input2.value, input3.value);
tablica[1] = Number(input4.value, input5.value, input6.value);
let suma = tablica[0] + tablica[1];
document.getElementById("div1").innerHTML = "Suma = " + suma;
}
</script>
</body>
</html>
When I run the code on my chrome browser, clicking the calculate button, it does not put the value in the Total and Sales Tax text box.
Also "Add the Javascript event handler for the click event of the Clear button, This should clear all text boxes and move the cursor to the Subtotal field."
I'm using Html and js file. Using a function expression to calculate and display my calculation, then also use the clear button to clear all text boxes.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Sales Tax Calculator</title>
<link rel="stylesheet" href="styles.css" />
<script src="sales_tax.js"></script>
</head>
<body>
<main>
<h1>Sales Tax Calculator</h1>
<p>Enter Subtotal and Tax Rate and click "Calculate".</p>
<label for="subtotal">Subtotal:</label>
<input type="text" id="subtotal" ><br>
<label for="tax_rate">Tax Rate:</label>
<input type="text" id="tax_rate" ><br>
<label for="sales_tax">Sales Tax:</label>
<input type="text" id="sales_tax" disabled ><br>
<label for="total">Total:</label>
<input type="text" id="total" disabled ><br>
<label> </label>
<input type="button" id="calculate" value="Calculate" >
<input type="button" id="clear" value="Clear" ><br>
</main>
</body>
</html>
This is my js file.
var $ = function (id) {
return document.getElementById(id);
};
var SumSalesTax = function (sub, rate){
var sales_tax = (sub * rate);
sales_tax = sales_tax.toFixed(2);
var total = (sub * rate + sub);
total = total.toFixed(2);
return sales_tax, total;
}
var processEntries = function() {
var sub = parseFloat($("subtotal").value);
var rate = parseFloat($("tax_rate").value);
if (sub < 0 && sub > 10000 && rate < 0 && rate > 12) {
alert("Subtotal must be > 0 and < 1000, and Tax Rate must be >0 and < 12.
")
} else {
$("sales_tax").value = SumSalesTax(sub, rate);
$("total").value = SumSalesTax(sub, rate);
}
};
window.onload = function() {
$("calculate").onclick = processEntries;
$("clear").onclick = sumSalesTax;
};
Sales Tax Calculator
It seems like you had a typo when you were doing $("clear").onclick = sumSalesTax;, as the variable was named SumSalesTax rather than with the lower case. This meant that the code block errored out and therefore didn't actually run. Make sure you make good use of the browser console so you can spot errors like this! The below example should work
var $ = function (id) {
return document.getElementById(id);
};
var SumSalesTax = function (sub, rate){
var sales_tax = (sub * rate);
sales_tax = sales_tax.toFixed(2);
var total = (sub * rate + sub);
total = total.toFixed(2);
return sales_tax, total;
}
var processEntries = function() {
var sub = parseFloat($("subtotal").value);
var rate = parseFloat($("tax_rate").value);
if (sub < 0 && sub > 10000 && rate < 0 && rate > 12) {
alert("Subtotal must be > 0 and < 1000, and Tax Rate must be >0 and < 12.")
} else {
$("sales_tax").value = SumSalesTax(sub, rate);
$("total").value = SumSalesTax(sub, rate);
}
};
window.onload = function() {
$("calculate").onclick = processEntries;
$("clear").onclick = SumSalesTax;
};
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Sales Tax Calculator</title>
<link rel="stylesheet" href="styles.css" />
<script src="sales_tax.js"></script>
</head>
<body>
<main>
<h1>Sales Tax Calculator</h1>
<p>Enter Subtotal and Tax Rate and click "Calculate".</p>
<label for="subtotal">Subtotal:</label>
<input type="text" id="subtotal" ><br>
<label for="tax_rate">Tax Rate:</label>
<input type="text" id="tax_rate" ><br>
<label for="sales_tax">Sales Tax:</label>
<input type="text" id="sales_tax" disabled ><br>
<label for="total">Total:</label>
<input type="text" id="total" disabled ><br>
<label> </label>
<input type="button" id="calculate" value="Calculate" >
<input type="button" id="clear" value="Clear" ><br>
</main>
</body>
</html>
I'm just trying to input an number and then add 10% and then take that total and .08% tax. Can you please help me figure out what I'm doing wrong. I sure it is something simple I'm overlooking but I'm new to this and can't figure what is wrong.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Price tool</title>
</head>
<body>
<form name="operation_form">
<label style="font-size:20px"><b>Price Tool</b></label>
<br/>
<br/>
<br/>
<label>Item Price: </label><input type="number" name='acertscore' value="" />
<br/>
<br/>
<label><b>Total is:</b></label><input type="number" name="answerbox">
<br/>
<input type="button" value="Calculate" onclick="costCalc();" />
<br/>
<input type="button" value="Reset" onClick="this.form.reset()" />
</form>
<script type="text/javascript">
function costCalc() {
var form = document.forms["operation_form"];
var x = form["acertscore"].value;
var cost = (x * .1) + x;
var answer = (cost * .08) + cost;
form["answerbox"].value = answer;
}
</script>
</body>
</html>
I logged the value of 'cost' in your code when I start with the value 100
var cost = (x * .1) + x;
console.log(cost);
and got a value of '10100'
But if I make sure that x is a number I get the correct value (110)
var cost = (x * .1) + Number(x);
console.log(cost);
And I get 118.8 for the total.
When you retrieve the value from your input control, it comes through as a string value.
var x = form["acertscore"].value; // x is a string
If you convert this to a number immediately you'll avoid additional problems.
var x = Number(form["acertscore"].value); // x is a number
function costCalc() {
var form = document.forms["operation_form"];
var x = Number(form["acertscore"].value);
var cost = (x * .1) + x;
var answer = (cost * .08) + cost;
form["answerbox"].value = answer;
}
<form name="operation_form">
<label style="font-size:20px"><b>Price Tool</b></label>
<br/>
<br/>
<br/>
<label>Item Price: </label><input type="number" name="acertscore" value="" />
<br/>
<br/>
<label><b>Total is:</b></label><input type="number" name="answerbox">
<br/>
<input type="button" value="Calculate" onclick="costCalc();" />
<br/>
<input type="button" value="Reset" onClick="this.form.reset()" />
</form>
The problem is that your answer number is so long that it tries to display exponents. Because of this, the number gets treated as a string, though you've specified that the output goes into an <input> field with a type of number. Because your answer is not a number, it can't be displayed.
To resolve this, you can parse the output as a float before displaying it:
form["answerbox"].value = parseFloat(answer);
function costCalc() {
var form = document.forms["operation_form"];
var x = form["acertscore"].value;
var cost = (x * .1) + x;
var answer = (cost * .08) + cost;
form["answerbox"].value = parseFloat(answer);
}
<form name="operation_form">
<label style="font-size:20px"><b>Price Tool</b></label>
<br/>
<br/>
<br/>
<label>Item Price: </label><input type="number" name='acertscore' value="" />
<br/>
<br/>
<label><b>Total is:</b></label><input type="number" name="answerbox">
<br/>
<input type="button" value="Calculate" onclick="costCalc();" />
<br/>
<input type="button" value="Reset" onClick="this.form.reset()" />
</form>
Hope this helps!
So basically, I am creating an application form for gym membership.
The base cost is $100. If juggling is selected, the cost will increase by $50.
Also, the base cost will increase by $50 if the 'BMI' is > 25 and <= 30. If the 'BMI' is > 30, it will increase by $100 instead.
This is my code. It is not working as intended. Would like some help. Thanks a lot.
<!DOCTYPE html>
<html>
<head>
<title>UWS application form</title>
<link rel="stylesheet" href="Prac1Task2.css" />
</head>
<body>
<form>
<fieldset>
<legend>Fitness Details</legend>
Favourite Activities: <br/>
<input type="checkbox" name="activity" value="cycling" id="cycling"><label for="cycling">Cycling</label>
<input type="checkbox" name="activity" value="50" id="juggling" onchange="update(this);"><label for="juggling">Juggling</label>
<br/>
<br/>
<label for="height">What is your height (Meters)</label><br/>
<input type="number" name="height" id="height" class="input" onchange="getBMI()">
<br/>
<label for="weight">What is your weight? (kg)</label><br/>
<input type="number" name="weight" id="weight" class="input" onchange="getBMI()">
<br/>
<label for="bmi">BMI:</label><br/>
<input type="number" name="bmi" id="bmi" class="input" value="" readonly>
<script>
function getBMI()
{
var height = document.getElementById("height").value;
var weight = document.getElementById("weight").value;
document.getElementById("bmi").value = (weight / height) / height;
var bmi = document.getElementById("bmi");
var price = document.getElementById("price").value;
if (bmi.value > 25 && bmi.value <= 30)
{
parseInt(price.value) += parseInt(50);
document.getElementById('price').value = price.value;
}
else if (bmi.value > 30)
{
document.getElementById("price").value = document.getElementById("price").value + 100;
}
}
</script>
</fieldset>
<br/>
<fieldset>
<legend>Application Details</legend>
Date of Application:<br/>
<input class="input" id="date" name="date" readonly />
<script>
var timetime = new Date();
document.getElementById("date").value = (timetime.getDate() + "/" + (timetime.getMonth() + 1)
+ "/" + timetime.getFullYear());
</script>
<br/><br/>
Cost of Application: <br/>
$<input type="number" class="input" id="price" name="price" step="0.01" value="100" readonly />
<script>
var total = 100;
function update(feature) {
if(feature.checked == true){
total += parseInt(feature.value);
document.getElementById('price').value = total;
}
if(feature.checked == false){
total -= parseInt(feature.value);
document.getElementById('price').value = total;
}
}
</script>
</fieldset>
<br/>
<input type="submit" value="Submit" class="button">
</form>
</body>
</html>
You haven't mentioned the exact issue which you are facing. However, I think there should be some problem with this line of code.
parseInt(price.value) += parseInt(50);
parseInt() is a function and you cannot assign values to it.
It should be some thing like this
price.value = parseInt(price.value) + parseInt(50);
Also price.value is not a proper reference because you are assigning document.getElementById("price").value; to it. So you should be using price instead of price.value