I am trying to create a javascript code for my website to do the calculations once a checkbox is checked. Each time i select a checkbox it should calculate the total price of the items.
This is my html code:
<form id="orderForm" action="#" method="get">
<section id="selectBook">
<h2>Select books</h2>
<?php
include_once('database_conn.php');
$sqlBooks = 'SELECT bookISBN, bookTitle, bookYear, catDesc, bookPrice FROM nbc_book b inner join nbc_category c on b.catID = c.catID WHERE 1 order by bookTitle';
$rsBooks = mysqli_query($conn, $sqlBooks);
while ($book = mysqli_fetch_assoc($rsBooks)) {
echo "\t<div class='item'>
<span class='bookTitle'>{$book['bookTitle']}</span>
<span class='bookYear'>{$book['bookYear']}</span>
<span class='catDesc'>{$book['catDesc']}</span>
<span class='bookPrice'>{$book['bookPrice']}</span>
<span class='chosen'><input type='checkbox' name='book[]' value='{$book['bookISBN']}' title='{$book['bookPrice']}' /></span>
</div>\n";
}
?>
</section>
<section id="collection">
<h2>Collection method</h2>
<p>Please select whether you want your chosen book(s) to be delivered to your home address (a charge applies for this) or whether you want to collect them yourself.</p>
<p>
Home address - £3.99 <input type="radio" name="deliveryType" value="home" title="3.99" checked = "checked" /> |
Collect from warehouse - no charge <input type="radio" name="deliveryType" value="trade" title="0" />
</p>
</section>
<section id="checkCost">
<h2>Total cost</h2>
Total <input type="text" name="total" id="total" size="10" readonly="readonly" />
</section>
The code has been separated into tag.
This is my current javascript code which i have written:
var item = document.getElementsByClassName("item");
var chkbox = document.getElementsByTagName("input");
for(var i = 0; i < chkbox.length; i++){
chkbox[i].onchange = function(){
//Recalculate total
getTotal();
}
}
function getTotal(){
var total = 0.0;
for(var i = 1; i <= chkbox.length; i++){
//If the checkbox is checked, add it to the total
if(chkbox[i-1].checked){
total = total + parseFloat(chkbox[i].value);
}
}
return total;
document.getElementById("total").innerHTML = total;
}
I really need some experts to help me on this. Thank you.
In getTotal() you are returning before setting the value here:
return total;
document.getElementById("total").innerHTML = total;
Set the input with the value rather than innerHTHML.
document.getElementById("total").setAttribute("value", total);
I had to change the checked to be parseFloat(chkbox[i-1].title) to match the if statement
jsFiddle
The above example uses to products, the first priced at 1 and the second at 2.
Related
I am trying to build a Simple Profit and Loss page for my sales. The goal is:
One row equals One client.
Add a dynamic row based on number of clients.
For each row I need to input the sale amount and cost amount, then calculate the profit for that row(client).
Calculate the sum of all rows profit.
The issue: When I add a row, the button calculates only the first DOM row and not the result of the cloned ones as well.
$(document).ready(function() {
$("#addForm").click(function() {
$("#pnl").clone().appendTo(".originalPnlDiv");
});
});
function calculate() {
var salesPnl = document.getElementsbyClassName('sale').value;
var costPnl = document.getElementsbyClassName('cost').value;
var sum = document.getElementById('total').value = salesPnl - costPnl;
}
function totalProfit() {
var totalSalesPnl = document.getElementsbyClassName('sale').value;
var totalCostPnl = document.getElementsbyClassName('cost').value;
var totalSum = document.getElementById('grandTotal').value = totalSalesPnl - totalCostPnl;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<h1>PNL</h1>
<div class="originalPnlDiv">
<form action="" id="pnl">
<select>
<option value="customerZ">customerZ</option>
<option value="customerX">customerX</option>
</select>
<input class="sale" type="number" placeholder="sale S$">
<input class="cost" type="number" placeholder="cost S$">
<input placeholder="invoice#">
<input type="date">
<input id="total"/>
</form>
</div>
<button id="addForm">Clone</button>
<button onclick="calculate()">calculate</button>
<br>
<br>
<button onclick="totalProfit()">Total Profit</button>
<p>The totalprofit is <span id="grandTotal"></span></p>
Thanks a lot for your help, I am only two months old regarding coding.
Have a nice day
don't use id when it's not going to be unique across the page.
re-organize your logic by moving the calculate button for each line
use document.querySelector and document.querySelectorAll
$(document).ready(function() {
$("#addForm").click(function() {
$("#pnl").clone().appendTo(".originalPnlDiv");
});
});
function calculate(button) {
var form = button.closest("form");
var salesPnl = form.querySelector('.sale').value;
var costPnl = form.querySelector('.cost').value;
var sum = salesPnl - costPnl;
form.querySelector('#total').value = sum;
return sum;
}
function totalProfit() {
var parent = document.querySelector(".originalPnlDiv");
var panels = parent.querySelectorAll("#pnl")
var grand = 0;
panels.forEach(function(panel) {
grand += calculate(panel);
})
document.querySelector("#grandTotal").innerText = grand;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<h1>PNL</h1>
<div class="originalPnlDiv">
<form action="" id="pnl">
<select>
<option value="customerZ">customerZ</option>
<option value="customerX">customerX</option>
</select>
<input class="sale" type="number" placeholder="sale S$">
<input class="cost" type="number" placeholder="cost S$">
<input placeholder="invoice#">
<input type="date">
<input id="total" />
<button onclick="calculate(this); return false">calculate</button>
</form>
</div>
<button id="addForm">Clone</button>
<br>
<br>
<button onclick="totalProfit()">Total Profit</button>
<p>The totalprofit is <span id="grandTotal"></span></p>
I'm working on small programme and trying to make something that user can choose an item from the list "its like a resturant menu where the user choose their foods and it shows the prices and the tax", I used name="items[]" to get the values i was wondering if there is a way to use ID or Class instead of the name.Any help would be appreciated in advance .
var count = 0;
var tax = 0.05;
var taxFeild = document.getElementById("Tax");
var checkBoxes = document.getElementById("checkBoxes");
var checks=document.querySelectorAll('.items');
var ItemTotal=document.getElementById('ItemTotal');
var Total=document.getElementById('TotalWithTax');
var btn = document.getElementById("btn");
function Calculate()
{
initVariable();
for(var i =0 ;i< checks.length;i++)
{
if(checks[i].checked)
{
count+=parseFloat(checks[i].value);
}
}
ItemTotal.innerHTML +=count;
taxFeild.innerHTML+=(parseFloat(tax*count));
Total.innerHTML+= (tax*count) + count;
}
btn.addEventListener('click',Calculate);
function initVariable()
{
count =0;
ItemTotal.innerHTML="Item Total: ";
taxFeild.innerHTML =" Tax: ";
Total.innerHTML ="Total with Tax: ";
}
<!DOCTYPE html>
<html lang="en">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta charset="utf-8"/>
<head>
<title>Test</title>
</head>
<body>
<div class = "container">
<div id="checkBoxes">
<input type="checkbox" class="items" value='7.99' id="item1">Fried Chicken ($7.99)<br>
<input type="checkbox" class="items" value='9.99' id="item1"> Fried Halibut ($9.99)<br>
<input type="checkbox" class="items" value='12.99' id="item1"> Hamburger ($12.99)<br><br>
</div>
<button id="btn">Calculate</button>
<div id="Sums">
<p id="ItemTotal"> Item Total: </p>
<p id="Tax"> Tax: </p>
<p id="TotalWithTax">Total with Tax: </p>
</div>
</div>
</body>
</html>
If you have more than one its not correct to use same ID.
you can use de class and select it with document.querySelectorAll('.items')
The possible variants could be to use querySelectorAll or getElementsByClassName:
<input type="checkbox" class="items" value='7.99' id="item1">Fried Chicken ($7.99)
<input type="checkbox" class="items" value='9.99' id="item1"> Fried Halibut ($9.99)
<input type="checkbox" class="items" value='7.99' id="item1"> Hamburger ($7.99)
const checkboxes = document.getElementsByClassName('items');
// OR
const checkboxes = document.querySelectorAll('.items');
Or you still could use name attribute on input (instead of class):
const checkboxes = document.querySelectorAll('input[name="items[]"]');
You can select elements by their class. I would recommend using jQuery for this, but it can also be done in pure JavaScript. Let's assuming that we have three basic checkboxes (this is pseudo code):
<input type="checkbox" class="form-control" value="7.99">
<input type="checkbox" class="form-control" value="9.99">
<input type="checkbox" class="form-control" value="8.99">
<button class="btn btn-primary" type="button">
Calculate
</button>
We could use jQuery to iterate over each element with the class name ".form-control" in this scenario:
$(document).ready(function() {
const tax = 0.05;
$('.btn').on('click', function() {
let total = 0;
$('.form-control').each(function() {
if($(this).is(':checked')) {
let val = parseFloat($(this).val());
total += val;
}
});
if(total > 0) {
total += tax;
alert('Your total is $' + total);
}
});
});
Without jQuery you would do something such as:
const checks = document.getElementByClassName('form-control');
and then you could run an checks.each();
As a side not, do not give elements the same ID name or else JavaScript will not know which element you are trying to select. If you are going to select elements based on their id, make sure they have different ID's.
I've been working on this calculator and it's working in the sense it's correctly calculating the price of the field and displaying it. The problem though is that it appears to append the correct answer to another value (presumably taken from the data-price as they correlate).
Here's the code I have for it:
var updateTotal = function() {
var sumtotal;
var sum = 0;
//Add each product price to total
$(".extraproduct").each(function() {
var extra_price = $(this).data('price');
var quantity = $('.extraQuantity', this).val();
//Total for one product
var subtotal = extra_price*quantity;
//Round to 2 decimal places.
subtotal = subtotal.toFixed(2);
//Display subtotal in HTML element
$('.productTotal', this).html(subtotal);
});
// total
$('.productTotal').each(function() {
sum += Number($(this).html());
});
$('#sum').html(sum.toFixed(2));
};
//Update total when quantity changes
$(".extraQuantity").bind("keyup change", function() {
updateTotal();
});
//Update totals when page first loads
updateTotal();
// set this from local
$('span.productTotal').each(function() {
$(this).before("£")
});
// unit price
$('.extraproduct span').each(function() {
var $price = $(this).parents("div").data('price');
$(this).before($price);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<span class="quote-label">Product 1</span>
<div class="input-wrap currency extraproduct" data-price="450.00">
<input type="number" class="extraQuantity" value="0" min="1" max="20" />
<span class="productTotal"></span>
</div>
<span class="quote-label">Product 2</span>
<div class="input-wrap currency extraproduct" data-price="10.00">
<input type="number" class="extraQuantity" value="0" min="1" max="20" />
<span class="productTotal"></span>
</div>
<span class="quote-label">Additional Product</span>
<div class="input-wrap checkbox-wrap extraproduct" data-price="5.00"><input type="checkbox" class="extraQuantity" value="0" />
<span class="productTotal"></span>
</div>
<div id="total">Total: £<span id="sum">0.00</span> </div>
https://jsfiddle.net/DigitalAdam/5fLb0vnp/26/
I thought it could be to do with the subtotal.toFixed part but had no luck when adjusting or removing that. Any help is appreciated.
Regards
Very Simple solution:
you are just using the .productTotal spans to calculate something. You could just set the display to none. It can still be used for calculations but it will now show:
.productTotal {
display: none;
}
I've built a small game using checkboxes with images. When the user comes across the item in the picture they select the checkbox and the message changes on screen. Because this is a tourist guide website and game, the user will leave the page to look at other pages, selecting the pictures as they come across the item. Therefore I needed to save the checked boxes in localstorage so that the data persists. I have some javascript that dsave the checked boxes.
Each picture has a value and when the image is clicked it adds to an overall total. I can't get this total to persist if the page is refreshed or closed and reopened.
My javascript for calculating the total and storing the checkboxes is below.
$('.dp-spotter-switch input[type="checkbox"]').click(function () {
if (!$(this).is(':checked')) {
$(this).parent('.dp-spotter-switch').removeClass('spotter-scale');
} else {
$(this).parent('.dp-spotter-switch').addClass('spotter-scale');
}
});
function showDiv() {
document.getElementById('getScoreLabel').style.display = "block";
}
// Total values
function totalIt() {
var input = document.getElementsByName("product");
var total = 0;
for (var i = 0; i < input.length; i++) {
if (input[i].checked) {
total += parseFloat(input[i].value);
}
}
document.getElementById("total").value = "" + total.toFixed(0);
}
// Store checkbox state
(function () {
var boxes = document.querySelectorAll("input[type='checkbox']");
for (var i = 0; i < boxes.length; i++) {
var box = boxes[i];
if (box.hasAttribute("store")) {
setupBox(box);
}
}
function setupBox(box) {
var storageId = box.getAttribute("store");
var oldVal = localStorage.getItem(storageId);
console.log(oldVal);
box.checked = oldVal === "true" ? true : false;
box.addEventListener("change", function () {
localStorage.setItem(storageId, this.checked);
});
}
})();
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div class="dp-spotter-container">
<div class="dp-top-paragraph">
<p>Some text</p>
<p>Click on the photos once you have spotted, and at the end click on <strong>Get Your Score</strong> to see how you've done</p>
<div id="getScoreLabel" style="display:none; text-align: center;">
<div class="dp-your-score-text" id="getScore">Your Score</div>
<input value="0" readonly="readonly" type="text" id="total" class="dp-scores dp-floating"/>
</div>
</div>
<br/>
<br/>
<!-- Spotter 1 -->
<div class="dp-switch-container">
<label class="dp-spotter-switch">
<img class="dp-spotter-img" src="image.jpg">
<input type="checkbox" name="product" value="3" id="cb1" class="spotter-check" onclick="totalIt()" store="checkbox1">
<span class="dp-spotter-slider"></span>
<span class="dp-spotter-text-label">Item 1- 3 Points</span>
</label>
</div>
<!-- Spotter 2 -->
<div class="dp-switch-container">
<label class="dp-spotter-switch">
<img class="dp-spotter-img" src="image.jpg">
<input type="checkbox" name="product" value="3" id="cb2" class="spotter-check" onclick="totalIt()" store="checkbox2">
<span class="dp-spotter-slider"></span>
<p class="dp-spotter-text-label">Item 2 - 3 Points</p>
</label>
</div>
<!-- Spotter 3 -->
<div class="dp-switch-container">
<label class="dp-spotter-switch">
<img class="dp-spotter-img" src="image.jpg">
<input type="checkbox" name="product" value="5" id="cb3" class="spotter-check" onclick="totalIt()" store="checkbox3">
<span class="dp-spotter-slider"></span>
<p class="dp-spotter-text-label">ITem 3 - 5 Points</p>
</label>
</div>
<!-- Spotter 4 -->
<div class="dp-switch-container">
<label class="dp-spotter-switch">
<img class="dp-spotter-img" src="image.jpg">
<input type="checkbox" name="product" value="10" id="cb4ß" class="spotter-check" onclick="totalIt()" store="checkbox4">
<span class="dp-spotter-slider"></span>
<p class="dp-spotter-text-label">Item 4 - 10 Points</p>
</label>
</div>
Get Your Score
</div>
I'm looking for a way to add to the existing function for the checkboxes if possible.
Unfortunately we can't use local storage in StackOverflow runnable code snippets, so you'll have to head over to my repl.it to see this working in action.
Since you're using jQuery, I've gone ahead and provided a jQuery solution:
Used .attr() to set the checkbox based on local storage
Called totalIt when showing showDiv
If you want to use your existing code, just change box.checked = oldVal === "true" ? true : false; to box.setAttribute('checked', oldVal === "true" ? true : false) and add totalIt to your showDiv function
Demo
https://repl.it/#AnonymousSB/SO53500148
Solution
function showDiv() {
totalIt();
document.getElementById('getScoreLabel').style.display = "block";
}
// Total values
function totalIt() {
var input = document.getElementsByName("product");
var total = 0;
for (var i = 0; i < input.length; i++) {
if (input[i].checked) {
total += parseFloat(input[i].value);
}
}
document.getElementById("total").value = "" + total.toFixed(0);
}
// Store checkbox state
function setupBox(box) {
var storageId = box.attr("store");
var oldVal = localStorage.getItem(storageId);
box.attr('checked', oldVal === "true" ? true : false)
box.change(function() {
localStorage.setItem(storageId, this.checked);
});
}
$(document).ready(function () {
$( "input[type='checkbox'][store]" ).each(function( index ) {
setupBox($( this ));
});
})
You can open Chrome Dev Tools, go to Application, and see your local storage
I was trying to make a content score as a class assignment.
Assume : (The user sees a URL and then select the checkboxes that are assigned to issues . Each issue is assigned a score in a array.)
Whats working :
Individual checks are registered with their respective scores being displayed
Whats not working :
Can someone help me to update the score ( as the user checks the checkbox or unchecks).
I am assuming in future if i want to increase the issues I will be able to do that since it is in an array. (am i right)
(my week 4 in JS)
//Set up an array with the respective score
var code = new Array();
code["v1"] = 1;
code["v2"] = 2;
code["v3"] = 3;
code["v4"] = 5;
// As the user selects the checkbox I want to keep on adding the score and as the user unchecks I want to recalculate and display.
function getvalueScore() {
var score = 0;
//Get a reference to the form
var theForm = document.forms["contentForm"];
//Get a reference to the score from the "ContentForm"
var contentScore = theForm.elements["contentScore"];
// loop through each check box
for (var i = 0; i < contentScore.length; i++) {
//if the radio button is checked
if (contentScore[i].checked) {
// I want to calculate and keep updating the score
score = code[contentScore[i].value];
}
}
//return score
return score;
}
function calculateTotal() {
//calculation for final score
var scoreCard = getvalueScore();
//display the result
var divobj = document.getElementById('totalPrice');
divobj.style.display = 'block';
divobj.innerHTML = "Your Content Score is " + scoreCard;
}
function hideTotal() {
var divobj = document.getElementById('totalPrice');
divobj.style.display = 'none';
}
<!DOCTYPE html>
<html>
<head>
<title>Content Score</title>
<meta charset="utf-8">
<script src="formcalculations.js"></script>
</head>
<body onload='hideTotal()'>
<div id="wrap">
<form action="" id="contentForm" onsubmit="return false;">
<div>
<div class="cont_order">
Content Score</br>
<label>Please select the issues you see on the page to calculate the content score</label>
</br>
<label class='radiolabel'>
<input type="checkbox" name="contentScore" value="v1" onclick="calculateTotal()" />No content value</label>
<br/>
<label class='radiolabel'>
<input type="checkbox" name="contentScore" value="v2" onclick="calculateTotal()" />Mediocre content value</label>
<br/>
<label class='radiolabel'>
<input type="checkbox" name="contentScore" value="v3" onclick="calculateTotal()" />Obsolete content</label>
<br/>
<label class='radiolabel'>
<input type="checkbox" name="contentScore" value="v4" onclick="calculateTotal()" />Irrelevant content</label>
<br/>
<br/>
<br/>
<div id="totalPrice"></div>
</div>
</div>
</form>
</div>
<!--End of wrap-->
</body>
</html>
In your code you assign last selected checkbox to score variable, so the only thing you need to do is to sum the scores with:
score += code[contentScore[i].value];