Develop Reference

Monitor the changes in table using JavaScript or HTML

I want to change the total price when the count or unit price of the products are changed on the website. I know I should use the onChange function, but I have no idea about how to write the JavaScript code.
<table id="productTable" class="layui-table">
<thead>
<tr>
<th>No.</th>
<th>PART NUMBER</th>
<th>DESCRIPTION</th>
<th>QTY(PCS)</th>
<th>UNIT PRICE (USD)</th>
<th>AMOUNT(USD)</th>
<th>OPRATION</th>
</tr>
</thead>
<tbody id="columns">
<tr style="display:none">
<td>1</td>
<td><input type="hidden" name="numberList"></td>
<td><input type="hidden" name="remarkList"></td>
<td><input type="hidden" name="countList"></td>
<td><input type="hidden" name="priceList"></td>
<td><input type="hidden" name="totalPriceList"></td>
</tr>
<tr th:each="orderProduct:${orderProducts}">
<td th:text="${orderProducts.indexOf(orderProduct)+1}"></td>
<td contenteditable="true" >
<input type="text" name="numberList" class="layui-input number" th:value="${orderProduct.number}">
</td>
<td contenteditable="true" >
<input type="text" name="remarkList" class="layui-input remark" th:value="${orderProduct.remark}">
</td>
<td id="productCoun" contenteditable="true" >
<input id="productCount" type="text" name="countList" onchange="update()" class="layui-input count"
th:value="${orderProduct.count}">
</td>
<td id="normalPric" contenteditable="true" >
<input id="normalPrice" type="text" name="priceList" onchange="update()" class="layui-input price"
th:value="${orderProduct.price}">
</td>
<td id="totalPric" th:text="${orderProduct.price}*${orderProduct.count}">
<input id="total" type="text" name="totalPriceList" class="layui-input price"
th:text="${orderProduct.price}*${orderProduct.count}">
</td>
<td>
Edit
<a href="javascript:void(0)" class="delBtn redType" onclick='delColumns(this)'>Del</a>
</td>
</tr>
</tbody>
</table>
I hope that the totalPrice = count*price could refresh whenever the user changes one of those values.

You can easily monitor the pointed input fields (#productCount and #normalPrice) and change the value of #total according to it. In the code below, I use the input event and I'm not using inline event handlers, but rather the function addEventListener() (know why).
const productCountInput = document.querySelector('#productCount');
const productPriceInput = document.querySelector('#normalPrice');
const totalPriceInput = document.querySelector('#total');
function updateTotalPrice() {
totalPriceInput.value = (parseFloat(productCountInput.value) * parseFloat(productPriceInput.value)) || 0;
}
productCountInput.addEventListener('input', updateTotalPrice);
productPriceInput.addEventListener('input', updateTotalPrice);
<table id="productTable" class="layui-table">
<thead>
<tr>
<th>No.</th>
<th>PART NUMBER</th>
<th>DESCRIPTION</th>
<th>QTY(PCS)</th>
<th>UNIT PRICE (USD)</th>
<th>AMOUNT(USD)</th>
<th>OPRATION</th>
</tr>
</thead>
<tbody id="columns">
<tr style="display:none">
<td>1</td>
<td><input type="hidden" name="numberList"></td>
<td><input type="hidden" name="remarkList"></td>
<td><input type="hidden" name="countList"></td>
<td><input type="hidden" name="priceList"></td>
<td><input type="hidden" name="totalPriceList"></td>
</tr>
<tr th:each="orderProduct:${orderProducts}">
<td th:text="${orderProducts.indexOf(orderProduct)+1}"></td>
<td contenteditable="true">
<input type="text" name="numberList" class="layui-input number" th:value="${orderProduct.number}">
</td>
<td contenteditable="true">
<input type="text" name="remarkList" class="layui-input remark" th:value="${orderProduct.remark}">
</td>
<td id="productCoun" contenteditable="true">
<input id="productCount" type="text" name="countList" class="layui-input count" th:value="${orderProduct.count}">
</td>
<td id="normalPric" contenteditable="true">
<input id="normalPrice" type="text" name="priceList" class="layui-input price" th:value="${orderProduct.price}">
</td>
<td id="totalPric" th:text="${orderProduct.price}*${orderProduct.count}">
<input id="total" type="text" name="totalPriceList" class="layui-input price" th:text="${orderProduct.price}*${orderProduct.count}">
</td>
<td>
Edit
Del
</td>
</tr>
</tbody>
</table>

Clone table rows with select element inside td tag

I'm new to JS. I have a dynamic table (I didn't add the code for add and delete rows) which I want to show in another table. I try to clone every row. Everything is working but td tag with select element doesn't cloned properly. It shows the selected value or the first value if there is no selected. The idea of this clone is to show the table in modal form and the cloned table will be like a preview. Cloning happened when the modal foem is show. In code below I add the button for cloning table. I think, it doesn't matter in this case.
This is the Fiddle link.
Here is my code HTML:
<table class="table table-bordered" id="table" >
<thead>
<tr>
<td >#</td>
<td >Description</td>
<td >Qty</td>
<td >Units</td>
<td >Price without vat</td>
<td >Vat %</td>
<td >Total</td>
<td >Del</td>
</tr>
</thead>
<tr class="product">
<td class="cloned" width="4%" >
<input type="number" class="enumer" style="width:100%; border: none; padding: 0" disabled="disabled">
</td>
<td class="cloned" width="34%">
<input type="text" class="item_product" style="width:100%;" name="product[]">
</td>
<td class="cloned" width="18">
<input style="width:100%;" class="qty" id="qty" name="qty[]" pattern="[+-]?([0-9]+[.,]?[0-9]*)" type="text" value="0" required>
</td>
<td class="cloned" width="7%">
<input id="item_units[]" class="units" style="width:100%;" name="item_units[]" type="text" value="ks">
</td>
<td class="cloned" width="10%">
<input class="price" style="width:100%;" id='price' name="price_unit[]" pattern="[+-]?([0-9]+[.,]?[0-9]*)" value="0" type="text" required>
</td>
<td class="cloned" width="7%" id="vat_td">
<select class="vat" id="vat" name="vat[]" type="text">
<option value="0">0</option>
<option value="10">10</option>
<option value="20">20</option>
</select>
</td>
<input class="hidden" hidden value="1" id="payer_vat_hidden">
<td class="cloned" width="17%">
<input type="number" style="width:100%; background: #dddddd;" class="amount" id="amount" name="amounts[]" readonly>
</td>
<td class="delTD" width="5%">
<button type="button" style="width:100%;" id="deleteRow" class="btn btn-danger btn-sm">Delete</button>
</td>
</tr>
</table>
<button onclick="copyTable()">copy table</button>
<table class="table table-bordered" id="second_table" >
<thead>
<tr>
<th>#</th>
<th>DESCRIPTION</th>
<th class="text-center">QUANTITY</th>
<th class="text-center">UNITS</th>
<th class="text-right">PRICE</th>
<th class="text-right">Total</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
Here is my code Javascript:
function copyTable(){
$("#second_table tr").remove();
$("#table tr").each(function() {
var $target = $("#second_table");
var $tds = $(this).children(),
$row = $("<tr></tr>");
$row.append($tds.eq(0).clone())
.append($tds.eq(1).clone())
.append($tds.eq(2).clone())
.append($tds.eq(3).clone())
.append($tds.eq(4).clone())
.append($tds.eq(5).clone())
.append($tds.eq(6).clone())
.appendTo($target);
});
}

Jquery appended data stacks on top of eachother instead of over the table lenght

I have some data from a AJAX GET request I would like to append to a table.
This is my HTML:
<form>
<table id="project-table" class="table table-striped table-inverse table-responsive">
<caption>Projects</caption>
<thead class="thead-inverse">
<tr>
<th scope="col">#</th>
<th scope="col">Project name</th>
<th scope="col">Description</th>
<th scope="col">Estimated time (min)</th>
<th scope="col">Actual time (min)</th>
<th scope="col">Add task</th>
<th scope="col">Delete project</th>
</tr>
</thead>
<tbody id="project-body">
</tbody>
</table>
</form>
I would like to append my data inside the tbody with the id of project-body.
I append my data like this:
$('#project-body').append(
`
<tr>
<td> <input class="form-control" type="hidden" name="projectid" id="projectid > </td>
<td> <input class="form-control" type="text" name="projectName" id="projectName > </td>
<td> <input class="form-control" type="text" name="description" id="description > </td>
<td> <input class="form-control" type="text" name="estimatedTime" id="estimatedTime > </td>
<td> <input class="form-control" type="text" name="actualTime" id="actualTime > </td>
<td> <a id="addTask" class="btn btn-info" href="Overview.php" role="button"> <i class="fa fa-angle-right" aria-hidden="true"> </i> Add task </td>
<td> <button type="submit" id="deleteProject" name="deleteProject" class="btn btn-danger"> <i class="fa fa-angle-right" aria-hidden="true"> </i> Delete project </button> </td>
</tr>
`
);
The problem is that all of my TD elements seem to either be not showing at all or are stacking on top of each other. Normally i would like my data to spread vertically over my table filling the all of the table heads

You have missed to add value attribute to each input.
Here is a working example:
$('#add-row').on('click', function(e){
$('#project-body').append(
`
<tr>
<td>
<input class="form-control" type="hidden" name="projectid" id="projectid value="1">
</td>
<td>
<input class="form-control" type="text" name="projectName" id="projectName value="Some value">
</td>
<td>
<input class="form-control" type="text" name="description" id="description value="Some value">
</td>
<td>
<input class="form-control" type="text" name="estimatedTime" id="estimatedTime value="Some value">
</td>
<td>
<input class="form-control" type="text" name="actualTime" id="actualTime value="Some value">
</td>
<td>
<a id="addTask" class="btn btn-info" href="Overview.php" role="button">
<i class="fa fa-angle-right" aria-hidden="true"> </i> Add task
</a>
</td>
<td>
<button type="submit" id="deleteProject" name="deleteProject" class="btn btn-danger">
<i class="fa fa-angle-right" aria-hidden="true"> </i> Delete project
</button>
</td>
</tr>
`
);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button id="add-row">Add row</button>
<form>
<table id="project-table" class="table table-striped table-inverse table-responsive">
<caption>Projects</caption>
<thead class="thead-inverse">
<tr>
<th scope="col">#</th>
<th scope="col">Project name</th>
<th scope="col">Description</th>
<th scope="col">Estimated time (min)</th>
<th scope="col">Actual time (min)</th>
<th scope="col">Add task</th>
<th scope="col">Delete project</th>
</tr>
</thead>
<tbody id="project-body">
</tbody>
</table>
</form>
Hope it helps.

How to add extra row on a table by clicking

I am trying to create an invoice system and I need to add a function to add extra rows.
What I have looks like this:
$(document).ready(function() {
$("#addrow").click(function(){
$(".item-row:last").after('
<tr class="item-row">
<td>#</td>
<td>New Item</td>
<td>New</td>
<td>New</td>
<td>New</td>
<td>New</td>
<td>New</td>
</tr>');
bind();
});
});
<table>
<tr>
<th>#</th>
<th>Type</th>
<th>Location</th>
<th>Item</th>
<th>Cost</th>
<th>Days</th>
<th>Price</th>
</tr>
<tr class="item-row">
<td>1</td>
<td>Type</td>
<td>Location</td>
<td>Item</td>
<td>100</td>
<td>2</td>
<td>200</td>
</tr>
<tr id="hidden-row">
<td colspan=7>
<a id="addrow" href="javascript:;" title="Add a row">Add a row</a>
</td>
</tr>
What I want to do but have no idea how to do it is: click Add a row, and have an extra row to add more products. I did some research and came across some example and I took the code for the script from there but I do not know if I left part of the script out. I am using, html, php and js any help will be greatly appreciated! thank you in advanced.

You need to use `` instead of '' if its multiple line html. Also, you need to use .bind():
$(document).ready(function() {
$("#addrow").click(function() {
$(".item-row:last").after(`
<tr class="item-row">
<td>#</td>
<td>New</td>
<td>New</td>
<td>New</td>
<td>New</td>
<td>New</td>
<td>New</td>
</tr>`)
.bind();
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<th>#</th>
<th>Type</th>
<th>Location</th>
<th>Item</th>
<th>Cost</th>
<th>Days</th>
<th>Price</th>
</tr>
<tr class="item-row">
<td>1</td>
<td>Type</td>
<td>Location</td>
<td>Item</td>
<td>100</td>
<td>2</td>
<td>200</td>
</tr>
<tr id="hidden-row">
<td colspan=7>
<a id="addrow" href="javascript:;" title="Add a row">Add a row</a>
</td>
</tr>
</table>

$(document).ready(function() {
var iCnt=0;
$('#FaqsTable').on('click','#addCF',function() {
if(iCnt<=100) {
iCnt=iCnt+1;
$("#FaqsTable").append('<tr>'+
//'<td> <div class=" col-md-9"><div class="gt_privacy_field default_width"> <input type="text" class="c_ph" id="POID" name="POID[]" value="" placeholder="POID" /></div></div></td>' +
'<td style="display:none"><input type="text" class="c_ph" id="BillDetailID" name="BillDetailID[]" value="0" placeholder="Select Item" style="width:150px" /></td>'+
'<td><input type="text" class="form-control" id="Perticulars" name="Perticulars[]" value="" placeholder="Enter Perticular" style="width:400px"/></td>'+
'<td><input type="text" class="form-control" id="Amount" name="Amount[]" value="0" placeholder="Enter Amount" style="width:150px"/></td>'+
'<td class="hidden" style="display:none"><input type="text" class="Flag sm-form-control" id="Flag" name="Flag[]" value="I" placeholder="Flag" /></td>'+
'<td><p class="fa fa-trash-o m-r-5" style="color:red"></p>Remove</td> '+
'</tr>');
}
});
$("#FaqsTable").on('click','#remCF',function() {
var flag=$(this).closest('tr').find(".Flag").val();
if(flag=="I") {
$(this).closest('tr').remove();
}
else(flag=="U")
{
$(this).closest("tr").hide();
$(this).closest('tr').find(".Flag").val("D");
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<div class="form-group row">
<div class="table-responsive">
<table id="FaqsTable" class="table table-bordered nobottommargin">
<tr style="background-color:#b5aeae">
<th style="text-align:center;width:400px;">Perticular </th>
<th style="text-align: center; width: 150px;">Amount </th>
<th style="text-align: center; width: 100px;">Action</th>
<tr />
<tr>
<td style="display:none">
<input type="text" class="form-control" id="BillDetailID" name="BillDetailID[]" value="0" placeholder="ItemName" style="width:150px" required />
</td>
<td>
<input type="text" class="form-control" id="Perticulars" name="Perticulars[]" value="" placeholder="Enter Perticular" style="width:400px" required />
</td>
<td>
<input type="text" class="form-control" id="Amount" name="Amount[]" value="0" placeholder="EnterAmount" style="width:150px" required />
</td>
<td>
<p class="fa fa-plus" style="color:green"></p>Add
</td>
</tr>
</table>
</div>
</div>
$(document).ready(function() {
var iCnt=0;
$('#FaqsTable').on('click','#addCF',function() {
if(iCnt<=100) {
iCnt=iCnt+1;
$("#FaqsTable").append('<tr>'+
//'<td> <div class=" col-md-9"><div class="gt_privacy_field default_width"> <input type="text" class="c_ph" id="POID" name="POID[]" value="" placeholder="POID" /></div></div></td>' +
'<td style="display:none"><input type="text" class="c_ph" id="BillDetailID" name="BillDetailID[]" value="0" placeholder="Select Item" style="width:150px" /></td>'+
'<td><input type="text" class="form-control" id="Perticulars" name="Perticulars[]" value="" placeholder="Enter Perticular" style="width:400px"/></td>'+
'<td><input type="text" class="form-control" id="Amount" name="Amount[]" value="0" placeholder="Enter Amount" style="width:150px"/></td>'+
'<td class="hidden" style="display:none"><input type="text" class="Flag sm-form-control" id="Flag" name="Flag[]" value="I" placeholder="Flag" /></td>'+
'<td><p class="fa fa-trash-o m-r-5" style="color:red"></p>Remove</td> '+
'</tr>');
}
});
$("#FaqsTable").on('click','#remCF',function() {
var flag=$(this).closest('tr').find(".Flag").val();
if(flag=="I") {
$(this).closest('tr').remove();
}
else(flag=="U")
{
$(this).closest("tr").hide();
$(this).closest('tr').find(".Flag").val("D");
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div class="form-group row">
<div class="table-responsive">
<table id="FaqsTable" class="table table-bordered nobottommargin">
<tr style="background-color:#b5aeae">
<th style="text-align:center;width:400px;">Perticular </th>
<th style="text-align: center; width: 150px;">Amount </th>
<th style="text-align: center; width: 100px;">Action</th>
<tr />
<tr>
<td style="display:none">
<input type="text" class="form-control" id="BillDetailID" name="BillDetailID[]" value="0" placeholder="ItemName" style="width:150px" required />
</td>
<td>
<input type="text" class="form-control" id="Perticulars" name="Perticulars[]" value="" placeholder="Enter Perticular" style="width:400px" required />
</td>
<td>
<input type="text" class="form-control" id="Amount" name="Amount[]" value="0" placeholder="EnterAmount" style="width:150px" required />
</td>
<td>
<p style="color:green"></p>Add
</td>
</tr>
</table>
</div>
</div>

jQuery: Change <a> to <input> when clicking adjacent <a> in <table>

Using jQuery, how can I do the following when clicking the edit icon in the third column:
Change the text in the adjacent second column to an input box
Change the icon class in the third column to a save button
Change the original text in the second column to what was entered into the input box
(Sorry if that's confusing and/or a lot to ask!)
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" rel="stylesheet" />
<div class="modal-body">
<form>
<table id="modalLinks" class="table table-hover">
<thead align="left">
<tr>
<th scope="col">Name</th>
<th scope="col-xs-4">URL</th>
<th scope="col">Edit</th>
</tr>
</thead>
<tbody align="left">
<tr>
<th scope="row" id="modalLinkName">Link 1</td>
<td>
<a id="modalLinkURL">https://www.link1.com</a>
<input id="modalLinkInput" type="hidden" class="form-control form-control-sm">
</td>
<td>
<a id="modalEditLink" href="#">icon
<i class="fas fa-pen"></i>
</a>
</td>
</tr>
<tr>
<th scope="row" id="modalLinkName">Link 2</td>
<td>
<a id="modalLinkURL">https://www.link2.com</a>
<input id="modalLinkInput" type="hidden" class="form-control form-control-sm">
</td>
<td>
<a id="modalEditLink" href="#">icon
<i class="fas fa-pen"></i>
</a>
</td>
</tr>
<tr>
<th scope="row" id="modalLinkName">Link 3</td>
<td>
<a id="modalLinkURL">https://www.link3.com</a>
<input id="modalLinkInput" type="hidden" class="form-control form-control-sm">
</td>
<td>
<a id="modalEditLink" href="#">icon
<i class="fas fa-pen"></i>
</a>
</td>
</tr>
</tbody>
</table>
</form>
</div>

First there are a few issues to fix in your HTML:
id attribute values must be unique in HTML. Use class names instead for where you currently have duplicates.
you have <th> opening tags that are closed with </td>
With those changes, you could use this click handler:
$(".modalEditLink").click(function () {
if ($(this).find(".fa-pen").length) { // edit operation:
var $a = $(this).closest("tr").find(".modalLinkURL");
var $inp = $("<input>").addClass("editURL").val($a.text());
$a.replaceWith($inp);
$inp.focus();
$(this).find(".fas").removeClass("fa-pen").addClass("fa-save");
} else { // save operation:
var $inp = $(this).closest("tr").find(".editURL");
var $a = $("<a>").addClass("modalLinkURL").text($inp.val());
$inp.replaceWith($a);
$(this).find(".fas").removeClass("fa-save").addClass("fa-pen");
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" rel="stylesheet" />
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.3/css/all.css" rel="stylesheet" />
<table id="modalLinks" class="table table-hover">
<thead align="left">
<tr>
<th scope="col">Name</th>
<th scope="col-xs-4">URL</th>
<th scope="col">Action</th>
</tr>
</thead>
<tbody align="left">
<tr>
<td scope="row" class="modalLinkName">Link 1</td>
<td>
<a class="modalLinkURL">https://www.link1.com</a>
<input class="modalLinkInput" type="hidden" class="form-control form-control-sm">
</td>
<td>
<a class="modalEditLink" href="#">icon
<i class="fas fa-pen"></i>
</a>
</td>
</tr>
<tr>
<td scope="row" class="modalLinkName">Link 2</td>
<td>
<a class="modalLinkURL">https://www.link2.com</a>
<input class="modalLinkInput" type="hidden" class="form-control form-control-sm">
</td>
<td>
<a class="modalEditLink" href="#">icon
<i class="fas fa-pen"></i>
</a>
</td>
</tr>
<tr>
<td scope="row" class="modalLinkName">Link 3</td>
<td>
<a class="modalLinkURL">https://www.link3.com</a>
<input class="modalLinkInput" type="hidden" class="form-control form-control-sm">
</td>
<td>
<a class="modalEditLink" href="#">icon
<i class="fas fa-pen"></i>
</a>
</td>
</tr>
</tbody>
</table>