Calculate column on row add for all rows - javascript

I have developed a code to build out salary costs for a project. The problem is that only the first row is calculating.
I have searched and found a few forums discussing the same problem but every approach/code looks completely different. Also, I have copied whole coding examples from youtube videos/forums to replicate a solution and none seems to work. I know there may be issues with ID/class but being new to coding, everything just confuses me. Help!
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<form name='vetCosting'>
<h3> Salaries </h3>
<table ID="salaries">
<tr>
<th>Classification</th>
<th>Hourly rate</th>
<th>Hours</th>
<th>Cost</th>
<th>Comments</th>
<th>Type</th>
<th></th>
<th></th>
</tr>
<tr>
<td>
<select>
<option value="T1.0">Teacher 1.0</option>
<option value="T1.1">Teacher 1.1</option>
<option value="T1.2">Teacher 1.2</option>
<option value="T1.3">Teacher 1.3</option>
</select>
</td>
<td><input type="number" name="hourlyRate" value="" onFocus="startCalc();" onBlur="stopCalc()"></td>
<td><input type="number" name="salaryHours" value="" onFocus="startCalc();" onBlur="stopCalc()"></td>
<td><input type="number" name="salaryCost" readonly="readonly"></td>
<td><input type="text" name="salComments"></td>
<td><input type="text" name="salType"></td>
<td><input type="button" value="+" ; onclick="ob_adRows.addRow(this)"></td>
<td><input type="button" value="-" ; onclick="ob_adRows.delRow(this)"></td>
</tr>
</table>
</form>
<script>
function startCalc() {
interval = setInterval("calc()", 2);
}
function calc() {
hrRate = document.vetCosting.hourlyRate.value;
salHours = document.vetCosting.salaryHours.value;
document.vetCosting.salaryCost.value = ((hrRate * 1) * (salHours * 1));
}
function stopCalc() {
clearInterval(interval);
}
</script>
<script>
function adRowsTable(id) {
var table = document.getElementById(id);
var me = this;
if (document.getElementById(id)) {
var row1 = table.rows[1].outerHTML;
function setIds() {
var tbl_id = document.querySelectorAll('#' + id + ' .tbl_id');
for (var i = 0; i < tbl_id.length; i++) tbl_id[i].innerHTML = i + 1;
}
me.addRow = function (btn) {
btn ? btn.parentNode.parentNode.insertAdjacentHTML('afterend', row1) :
table.insertAdjacentHTML('beforeend', row1);
setIds();
}
me.delRow = function (btn) {
btn.parentNode.parentNode.outerHTML = '';
setIds();
}
}
}
var ob_adRows = new adRowsTable('salaries');
</script>
</body>
</html>
I would like to be able to add and remove rows with calculations computing correctly for every row based on data inputs.

My first step would be to change your code from using setInterval() because that is running every 2 milliseconds even when there is no change in the input and the user is simply sitting there. I'd change it to a onKeyUp event that fires much less frequently.
That's done by simply changing your inputs to this:
<td><input type="number" name="hourlyRate" value="" onKeyUp="calc();"></td>
So we get rid of the startCalc() and stopCalc() functions.
Now, once we have multiple rows, we need a way to identify each row. So we give your first row an id of 'row_0' and also pass it through your calc() functions as follows:
<td><input type="number" name="hourlyRate" value="" onKeyUp="calc('row_0');"></td>
We then update your calc() method to this, so that it can use each row individually:
function calc(id) {
var row = document.getElementById(id);
var hrRate = row.querySelector('input[name=hourlyRate]').value;
var salHours = row.querySelector('input[name=salaryHours]').value;
row.querySelector('input[name=salaryCost]').value = ((hrRate * 1) * (salHours * 1));
}
Next, upon clicking the buttons, this error is fired:
Uncaught ReferenceError: ob_adRows is not defined at HTMLInputElement.onclick
To change this, we'll change the function that you've written. Let's first prepare a template for each row, and then simply append it to the innerHTML of the table. However, this won't work because it will also refresh the entire table, hence wiping out data from our existing rows too. So we use this to make a new HTML node with of a row with the id 'row_x':
function newRowTemplate(rowCount) {
var temp = document.createElement('table');
temp.innerHTML = `<tr id='row_${rowCount}'>
<td>
<select>
<option value="T1.0">Teacher 1.0</option>
<option value="T1.1">Teacher 1.1</option>
<option value="T1.2">Teacher 1.2</option>
<option value="T1.3">Teacher 1.3</option>
</select>
</td>
<td><input type="number" name="hourlyRate" value="" onKeyUp="calc('row_${rowCount}');"></td>
<td><input type="number" name="salaryHours" value="" onkeyUp = "calc('row_${rowCount}');"></td>
<td><input type="number" name="salaryCost" readonly="readonly"></td>
<td><input type="text" name="salComments"></td>
<td><input type="text" name="salType"></td>
<td><input type="button" value="+" ; onclick="addRow()"></td>
<td><input type="button" value="-" ; onclick="removeRow(this)"></td>
</tr>`;
return temp.firstChild;
}
We directly make our new functions:
function addRow() {
var newRow = newRowTemplate(rowCount);
table.appendChild(newRow);
rowCount += 1;
}
function removeRow(el) {
el.parentNode.parentNode.remove();
rowCount -= 1;
}
And finally, we use these new functions in our original elements as follows:
<td><input type="button" value="+" ; onclick="addRow()"></td>
<td><input type="button" value="-" ; onclick="removeRow(this)"></td>
Here's the final result:
function calc(id) {
var row = document.getElementById(id);
var hrRate = row.querySelector('input[name=hourlyRate]').value;
var salHours = row.querySelector('input[name=salaryHours]').value;
row.querySelector('input[name=salaryCost]').value = ((hrRate * 1) * (salHours * 1));
}
var table = document.getElementById('salaries');
var rowCount = 1;
function newRowTemplate(rowCount) {
var temp = document.createElement('table');
temp.innerHTML = `<tr id='row_${rowCount}'>
<td>
<select>
<option value="T1.0">Teacher 1.0</option>
<option value="T1.1">Teacher 1.1</option>
<option value="T1.2">Teacher 1.2</option>
<option value="T1.3">Teacher 1.3</option>
</select>
</td>
<td><input type="number" name="hourlyRate" value="" onKeyUp="calc('row_${rowCount}');"></td>
<td><input type="number" name="salaryHours" value="" onkeyUp = "calc('row_${rowCount}');"></td>
<td><input type="number" name="salaryCost" readonly="readonly"></td>
<td><input type="text" name="salComments"></td>
<td><input type="text" name="salType"></td>
<td><input type="button" value="+" ; onclick="addRow()"></td>
<td><input type="button" value="-" ; onclick="removeRow(this)"></td>
</tr>`;
return temp.firstChild;
}
function addRow() {
var newRow = newRowTemplate(rowCount);
table.appendChild(newRow);
rowCount += 1;
}
function removeRow(el) {
el.parentNode.parentNode.remove();
rowCount -= 1;
}
<body>
<form name="vetCosting">
<h3> Salaries </h3>
<h3> Salaries </h3>
<table id="salaries">
<tr>
<th>Classification</th>
<th>Hourly rate</th>
<th>Hours</th>
<th>Cost</th>
<th>Comments</th>
<th>Type</th>
<th></th>
<th></th>
</tr>
<tr id="row_0">
<td>
<select>
<option value="T1.0">Teacher 1.0</option>
<option value="T1.1">Teacher 1.1</option>
<option value="T1.2">Teacher 1.2</option>
<option value="T1.3">Teacher 1.3</option>
</select>
</td>
<td><input type="number" name="hourlyRate" value="" onKeyUp="calc('row_0');"></td>
<td><input type="number" name="salaryHours" value="" onkeyUp="calc('row_0');"></td>
<td><input type="number" name="salaryCost" readonly="readonly"></td>
<td><input type="text" name="salComments"></td>
<td><input type="text" name="salType"></td>
<td><input type="button" value="+" ; onclick="addRow()"></td>
<td><input type="button" value="-" ; onclick="removeRow(this)"></td>
</tr>
</table>
</form>
</body>
I just realized a bug in my code. Once row_x is created, and I delete and add another row, it'll create row_x again because the rowCount returns to x. You can fix this by removing the decrement in the remove row function.

Related

when checkbox is checked not able to fetch data that are against that checkbox

I have data that is displayed in the form of a table and each row has a checkbox.
I am trying to fetch the data of each row when the checkbox is clicked against that row.
<tr>
<td><input type="text" name="child_name"></td>
<td><input type="text" name="child_age"></td>
<td><input type="checkbox" ></td>
</tr>
<tr>
<td><input type="text" name="child_name"></td>
<td><input type="text" name="child_age"></td>
<td><input type="checkbox" ></td>
</tr>
These will get generated dynamically, so the naming needs to same for the input box, however when i am fetching the value typed by the user,it fetches the value of only first row, and the values is getting repeated multiple times
$(document).ready(function(){
$('input[type="checkbox"]').click(function(){
if($(this).prop("checked") == true){
$tr = $(this).closest('tr');
var arr = [];
var data = $tr.children("td").map(function(){
var one = $("[name='child_name']").val();
var two = $("[name='child_age']").val();
arr.push(one)
arr.push(two)
return arr;
}).get();
console.log(data);
$('#post-result').append(data);
}
else if($(this).prop("checked") == false){
console.log("Checkbox is unchecked.");
}
});
});
Can anyone please tell how to resolve the issue
The name attribute in this case could complicate things a little bit. What I would do is use data-attributes to have specific identifiers for each row. Something like this:
UPDATED
I changed the behavior to work with dynamically added rows.
Using $(document).on("click"... you can affect future elements of the same type while $("[type='checkbox']").click() works only for currently existing elements.
I also took some liberty in expanding the example.
var children = [];
$(document).on("click", ".child-selector", function() {
var id = $(this).data("id");
if($(this).is(":checked")) {
var info = [];
info.push($(".child-name[data-id='"+ id +"']").val());
info.push($(".child-age[data-id='"+ id +"']").val());
console.log(info);
// An example of using objects to give some structure to the data
// and then store it to an array with all the checked rows
var child = {};
child.id = id;
child.name = $(".child-name[data-id='"+ id +"']").val();
child.age = $(".child-age[data-id='"+ id +"']").val();
children.push(child);
console.log(children);
} else {
console.log("Checkbox is unchecked.");
// An example of removing the specific children from the array
children.forEach(function(child, index) {
if(child.id == id) {
children.splice(index, 1);
}
});
console.log(children);
}
});
var clickCounter = 0;
var dataCounter = 13;
$("#add-child").click(function() {
var html = '<tr>'+
'<td><input type="text" class="child-name" data-id="'+ dataCounter +'" value="Child '+ clickCounter +'"></td>'+
'<td><input type="text" class="child-age" data-id="'+ dataCounter +'" value="'+ clickCounter +'"></td>'+
'<td><input class="child-selector" type="checkbox" data-id="'+ dataCounter +'"></td>'+
'</tr>';
$("table").append(html);
clickCounter++;
dataCounter++;
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<td><input type="text" class="child-name" data-id="9" value="John Connor"></td>
<td><input type="text" class="child-age" data-id="9" value="12"></td>
<td><input class="child-selector" type="checkbox" data-id="9"></td>
</tr>
<tr>
<td><input type="text" class="child-name" data-id="10" value="Jane Connor"></td>
<td><input type="text" class="child-age" data-id="10" value="12"></td>
<td><input class="child-selector" type="checkbox" data-id="10"></td>
</tr>
<tr>
<td><input type="text" class="child-name" data-id="11" value="Tom Connor"></td>
<td><input type="text" class="child-age" data-id="11" value="13"></td>
<td><input class="child-selector" type="checkbox" data-id="11"></td>
</tr>
<tr>
<td><input type="text" class="child-name" data-id="12" value="T800"></td>
<td><input type="text" class="child-age" data-id="12" value="1"></td>
<td><input class="child-selector" type="checkbox" data-id="12"></td>
</tr>
</table>
<button type="button" id="add-child">Add Child</button>
Now, if you need to send the data via post you should review your usage of name because as it currently is it would only send one value.
You can use the context parameter of $(selector [, context]) to only search inside the current <tr>:
$(document).ready(function() {
$('input[type="checkbox"]').click(function() {
if ($(this).prop("checked") == true) {
$tr = $(this).closest('tr');
var arr = [];
var one = $("[name='child_name']", $tr).val();
var two = $("[name='child_age']", $tr).val();
arr.push(one)
arr.push(two);
console.log(arr);
$('#post-result').append(arr);
} else if ($(this).prop("checked") == false) {
console.log("Checkbox is unchecked.");
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<td><input type="text" name="child_name" value="A Name"></td>
<td><input type="text" name="child_age" value="A Age"></td>
<td><input type="checkbox"></td>
</tr>
<tr>
<td><input type="text" name="child_name" value="B Name"></td>
<td><input type="text" name="child_age" value="B Age"></td>
<td><input type="checkbox"></td>
</tr>
</table>
<pre id="post-result"></pre>

Dynamic HTML Form - Javascript calculation errors

I'm currently working on an invoice project.
So far I have a dynamic form where you can add and remove rows (see snippet below).
However I have a problem with my javascript, I was wondering if someone could help me out with it.
Basically, when you input the values into the form on the first row, it calculates it all perfectly. However, if you add a new row and try to fill it in with some data, the javascript doesn't seem to perform any calculation for that row. It only works for the first row and it's really frustrating me! I can't seem to figure out why.
Any help is much appreciated. The snippet of code is below and you can run it and add some data to some rows to see for yourself. I need any advice I can get on this.
Thanks in advance guys.
Snelly
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
<script type="text/javascript">
function calculate() {
var QTY = document.getElementById("Qty").value;
var LINEPRICENET = document.getElementById("LinePriceNet").value;
var LINEPRICEDISCOUNT = document.getElementById("LinePriceDiscountInput").value;
var TAXRATE = document.getElementById("TaxRate").value;
// Lineprice with discount
LINEPRICEWITHDISCOUNT = (QTY*(LINEPRICENET - (LINEPRICENET * (LINEPRICEDISCOUNT))));
document.getElementById('LinePriceWithDiscount').value = LINEPRICEWITHDISCOUNT.toFixed(2);
//Line Price discount Amount
LINEPRICEDISCOUNTAMOUNT = (QTY*(LINEPRICENET) - (QTY*(LINEPRICENET - (LINEPRICENET * (LINEPRICEDISCOUNT)))));
document.getElementById("LinePriceDiscountAmount").value = LINEPRICEDISCOUNTAMOUNT.toFixed(2);
//Tax calculation
TAXAMOUNT = (LINEPRICEWITHDISCOUNT * TAXRATE);
document.getElementById("TaxAmount").value = TAXAMOUNT.toFixed(2);
//Calc Gross
LINEPRICEGROSSAMOUNT = (LINEPRICEWITHDISCOUNT + TAXAMOUNT);
document.getElementById("GrossOutput").value = LINEPRICEGROSSAMOUNT.toFixed(2);
}
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var colCount = table.rows[0].cells.length;
for(var i=0; i<colCount; i++) {
var newcell = row.insertCell(i);
newcell.innerHTML = table.rows[0].cells[i].innerHTML;
}
}
function deleteRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
for(var i=0; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
if(rowCount <= 1) { // limit the user from removing all the fields
alert("Cannot Remove all of the items!.");
break;
}
table.deleteRow(i);
rowCount--;
i--;
}
}
}
</script>
</head>
<body>
<form name="CalculationTesting" >
<p>
<input type="button" value="Add Item" onClick="addRow('dataTable')" />
<input type="button" value="Remove Selected Item" onClick="deleteRow('dataTable')" />
</p>
<thead>
<tr>
<th>Qty</th>
<th>Line Price Net</th>
<th>Line Price Discount%</th>
<th>Line Price Discount Amount</th>
<th>Line Price With Discount</th>
<th>VAT Rate Amount</th>
<th>VAT Amount</th>
<th>Line Price Gross-OUTPUT</th>
</tr>
</thead>
<table id="dataTable" border="1" width="600" height="50" cellpadding="10" cellspacing="3">
<tr>
<td><input type="checkbox" required="required" name="chk[]" checked="checked" /></td>
</td>
<td>
<input type="number" name="Qty" id="Qty" onchange="calculate();"/>
</td>
<td>
<input type="number" name="LinePriceNet" id="LinePriceNet" onchange="calculate();"/>
</td>
<td>
<select type="number" name="LinePriceDiscount" id="LinePriceDiscountInput" onchange="calculate();"/>
<option value="0.00">None</option>
<option value="0.01">1%</option>
<option value="0.02">2%</option>
<option value="0.03">3%</option>
<option value="0.04">4%</option>
<option value="0.05">5%</option>
<option value="0.06">6%</option>
<option value="0.07">7%</option>
<option value="0.08">8%</option>
<option value="0.09">9%</option>
<option value="0.10">10%</option>
</select>
</td>
<td>
<input readonly="readonly" type="number" name="LinePriceDiscountAmount" id="LinePriceDiscountAmount">
</td>
<td>
<input readonly="readonly" type="number" name="LinePriceWithDiscount" id="LinePriceWithDiscount">
</td>
<td>
<select type="number" name="TaxRate" id="TaxRate" onchange="calculate();"/>
<option value="0.00">Zero Rate</option>
<option value="0.20">Standard(20%)</option>
<option value="0.00">Exempt</option>
<option value="0.05">Reduced Rate</option>
<option value="0.00">Outside The Scope</option>
</select>
</td>
<td>
<input readonly="readonly" type="number" name="TaxAmount" id="TaxAmount">
</td>
<td>
<input readonly="readonly" type="number" name="GrossOutput" id="GrossOutput">
</td>
</tr>
</table>
</form>
</body>
</html>
I was able to fix it using following code. There might be cleaner version possible.
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
<script type="text/javascript">
function calculate(object) {
var QTY = object.parentNode.parentNode.querySelector('#Qty').value;
var LINEPRICENET = object.parentNode.parentNode.querySelector("#LinePriceNet").value;
var LINEPRICEDISCOUNT = object.parentNode.parentNode.querySelector("#LinePriceDiscountInput").value;
var TAXRATE = object.parentNode.parentNode.querySelector("#TaxRate").value;
// Lineprice with discount
LINEPRICEWITHDISCOUNT = (QTY*(LINEPRICENET - (LINEPRICENET * (LINEPRICEDISCOUNT))));
object.parentNode.parentNode.querySelector('#LinePriceWithDiscount').value = LINEPRICEWITHDISCOUNT.toFixed(2);
//Line Price discount Amount
LINEPRICEDISCOUNTAMOUNT = (QTY*(LINEPRICENET) - (QTY*(LINEPRICENET - (LINEPRICENET * (LINEPRICEDISCOUNT)))));
object.parentNode.parentNode.querySelector("#LinePriceDiscountAmount").value = LINEPRICEDISCOUNTAMOUNT.toFixed(2);
//Tax calculation
TAXAMOUNT = (LINEPRICEWITHDISCOUNT * TAXRATE);
object.parentNode.parentNode.querySelector("#TaxAmount").value = TAXAMOUNT.toFixed(2);
//Calc Gross
LINEPRICEGROSSAMOUNT = (LINEPRICEWITHDISCOUNT + TAXAMOUNT);
object.parentNode.parentNode.querySelector("#GrossOutput").value = LINEPRICEGROSSAMOUNT.toFixed(2);
}
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var colCount = table.rows[0].cells.length;
for(var i=0; i<colCount; i++) {
var newcell = row.insertCell(i);
newcell.innerHTML = table.rows[0].cells[i].innerHTML;
}
}
function deleteRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
for(var i=0; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
if(rowCount <= 1) { // limit the user from removing all the fields
alert("Cannot Remove all of the items!.");
break;
}
table.deleteRow(i);
rowCount--;
i--;
}
}
}
</script>
</head>
<body>
<form name="CalculationTesting" >
<p>
<input type="button" value="Add Item" onClick="addRow('dataTable')" />
<input type="button" value="Remove Selected Item" onClick="deleteRow('dataTable')" />
</p>
<thead>
<tr>
<th>Qty</th>
<th>Line Price Net</th>
<th>Line Price Discount%</th>
<th>Line Price Discount Amount</th>
<th>Line Price With Discount</th>
<th>VAT Rate Amount</th>
<th>VAT Amount</th>
<th>Line Price Gross-OUTPUT</th>
</tr>
</thead>
<table id="dataTable" border="1" width="600" height="50" cellpadding="10" cellspacing="3">
<tr>
<td><input type="checkbox" required="required" name="chk[]" checked="checked" /></td>
</td>
<td>
<input type="number" name="Qty" id="Qty" onblur="this.value = parseFloat(Math.round(this.value * 100) / 100).toFixed(2);" onchange="calculate(this);"/>
</td>
<td>
<input type="number" name="LinePriceNet" id="LinePriceNet" onblur="this.value = parseFloat(Math.round(this.value * 100) / 100).toFixed(2);" onchange="calculate(this);"/>
</td>
<td>
<select type="number" name="LinePriceDiscount" id="LinePriceDiscountInput" onchange="calculate(this);"/>
<option value="0.00">None</option>
<option value="0.01">1%</option>
<option value="0.02">2%</option>
<option value="0.03">3%</option>
<option value="0.04">4%</option>
<option value="0.05">5%</option>
<option value="0.06">6%</option>
<option value="0.07">7%</option>
<option value="0.08">8%</option>
<option value="0.09">9%</option>
<option value="0.10">10%</option>
</select>
</td>
<td>
<input readonly="readonly" type="number" name="LinePriceDiscountAmount" id="LinePriceDiscountAmount">
</td>
<td>
<input readonly="readonly" type="number" name="LinePriceWithDiscount" id="LinePriceWithDiscount">
</td>
<td>
<select type="number" name="TaxRate" id="TaxRate" onchange="calculate(this);"/>
<option value="0.00">Zero Rate</option>
<option value="0.20">Standard(20%)</option>
<option value="0.00">Exempt</option>
<option value="0.05">Reduced Rate</option>
<option value="0.00">Outside The Scope</option>
</select>
</td>
<td>
<input readonly="readonly" type="number" name="TaxAmount" id="TaxAmount">
</td>
<td>
<input readonly="readonly" type="number" name="GrossOutput" id="GrossOutput">
</td>
</tr>
</table>
</form>
</body>
</html>
The issue was, whenever you were hitting calculate function, it was taking values from first row only as there was no different ids for each rows. Here I used this to differentiate each row.
I had to use parentNode twice. If you find a cleaner version, please do share.
Also, using jQuery will make things easier.

Select box not changing while dynamically adding rows in a table

Hi iam able to add rows dynamically from the table below using javascript but the onchange function fired on the select box only works on the first row added how do you make it work for every row being added.Thanks.
<html>
<body>
<link href="style.css" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script src='script.js'></script>
<table id="addProducts" border="1">
<tr>
<td>POI</td>
<td>Quantity</td>
<td>Price</td>
<td>Product</td>
<td>Add Rows?</td>
</tr>
<tr>
<td>1</td>
<td><input size=25 type="text" id="lngbox" readonly=true/></td>
<td><input size=25 type="text" id="price" readonly=true/></td>
<td>
<select name="selRow0" class="products">
<option value="value0">Product 1</option>
<option value="value1">Product 2</option>
</select>
</td>
<td><input type="button" id="delProducts" value="Delete" onclick="deleteRow(this)"/></td>
<td><input type="button" id="addmoreProducts" value="AddMore" onclick="insRow()"/></td>
</tr>
</table>
<div id="shw"></div>
</body>
</html>
$(function () {
$("select.products").on("change", function () {
var selected = $(this).val();
$("#price").val(selected);
})
});
function deleteRow(row)
{
var i = row.parentNode.parentNode.rowIndex;
document.getElementById('addProducts').deleteRow(i);
}
function insRow()
{
var x = document.getElementById('addProducts');
// deep clone the targeted row
var new_row = x.rows[1].cloneNode(true);
// get the total number of rows
var len = x.rows.length;
// set the innerHTML of the first row
new_row.cells[0].innerHTML = len;
// grab the input from the first cell and update its ID and value
var inp1 = new_row.cells[1].getElementsByTagName('input')[0];
inp1.id += len;
inp1.value = '';
// grab the input from the first cell and update its ID and value
var inp2 = new_row.cells[2].getElementsByTagName('input')[0];
inp2.id += len;
inp2.value = '';
// append the new row to the table
x.appendChild(new_row);
}
I've updated your code. This should work now. Look at this jsfiddle:
JS:
$(function () {
$(document).on('change', 'select.products', function(){
var selected = $(this).val();
$(this).parents('tr').find('.price').val(selected);
});
$(document).on('click', '.addProduct', function(){
var ele = $(this).parents('tr').clone();
ele.find('input[type=text]').val('');
$(this).parents('tr').after(ele);
});
$(document).on('click', '.delProduct', function(){
if($(this).parents('table').find('tr').length > 2) {
$(this).parents('tr').remove();
}
});
});
Also I've updated your HTML:
<td><input size=25 type="text" class="lngbox" readonly=true/></td>
<td><input size=25 type="text" class="price" readonly=true/></td>
<td><input type="button" class="delProduct" value="Delete" /></td>
<td><input type="button" class="addProduct" value="AddMore" /></td>
Try this,
$("select.products").on("change", function(){
var selectedValue = $(this).val();
var td = $(this).parent();
(((td).parent()).children()[2].getElementsByTagName("input")[0]).value = selectedValue;
});

Show hide elements based on ID from select dropdown javascript

I know this is proboly the most asked question out there but I have scoured the net and tried several examples and none of them have worked. Here is my issue.
First I have no control over the TR TD structure, can't use DIV.
I need to be able to display certain TD's based on the select dropdown menu value. I have 4 different id's I am using "to", "to_field", "from", "from_field". The script I have shown is not working. Can someone help me out?
Example: If someone selects "In Use" in the dropdown then I just want all the elementID that have "from" and "from_field" to display only. If someone selects a different value then I would like to change that around.
<script type="text/javascript">
function showstuff(element){
document.getElementById("from").style.display = element=="in_use"?"visibility":"visible";
document.getElementById("to").style.display = element=="in_use"?"visibility":"hidden";
document.getElementById("from_field").style.display = element=="in_use"?"visibility":"visible";
document.getElementById("to_field").style.display = element=="in_use"?"visibility":"hidden";
document.getElementById("from").style.display = element=="relocated"?"visibility":"visible";
document.getElementById("to").style.display = element=="relocated"?"visibility":"visible";
document.getElementById("from_field").style.display = element=="relocated"?"visibility":"visible";
document.getElementById("to_field").style.display = element=="relocated"?"visibility":"visible";
}
</script>
<table>
<tr>
<td><h2>Add/Edit Parts</h2></td>
</tr>
</table>
<form action="includes/inventory_parts.php" method="post" name="myform">
<table cellpadding="10" style="border:solid 1px #000000">
<tr>
<td colspan="20"><h3>Add New Part</h3></td>
</tr>
<tr>
<td style="font-weight:bold">Printer Man Part#</td>
<td style="font-weight:bold">Part#</td>
<td style="font-weight:bold">Title</td>
<td style="font-weight:bold">Serial#</td>
<td style="font-weight:bold">Status</td>
<td id="from" style="font-weight:bold;visibility:hidden">From Printer Serial#</td>
<td id="to" style="font-weight:bold;visibility:hidden;">To Printer Serial#</td>
<td style="font-weight:bold">Submit</td>
</tr>
<tr>
<td><input type="text" name="printer_man_part_number" /></td>
<td><input type="text" name="part_number" /></td>
<td><input type="text" name="title" /></td>
<td><input type="text" name="this_part_serial_number" /></td>
<td>
<select name="status" onchange="showstuff(this.value);">
<option></option>
<option value="in_use">In Use</option>
<option value="relocated">Relocated</option>
<option value="disposed">Disposed</option>
<option value="selling">Selling</option>
</select>
</td>
<td id="from_field"><input type="text" name="from" style="visibility:hidden" /></td>
<td id="to_field"><input type="text" name="to" style="visibility:hidden" /></td>
<td><input type="submit" name="submit" value="Add Part" /></td>
</tr>
</table>
</form>
function showstuff(element) {
// first hide everything
document.getElementById("from").style.visibility = 'hidden';
document.getElementById("to").style.visibility = 'hidden';
document.getElementById("from_field").style.visibility = 'hidden';
document.getElementById("to_field").style.visibility = 'hidden';
var targets;
// select the IDs that should be unhidden based on element
switch (element) {
case 'in_use': targets = ['from', 'from_field']; break;
case 'relocated': targets = ['to', 'to_field']; break;
...
}
// now unhide the selected IDs.
for (var i = 0; i < targets.length; i++) {
document.getElementById(targets[i]).style.visibility = 'visible';
}
}

function to disable/enable dynamically generated form fields

I'm no javascript expert and i'm currently trying to create a function for a form that has the same fields repeated depending on a number selected on a previous page.
There could be between 1 and 10 rows of the form fields with each having a radio button selection that will enable/disable each row.
At the moment i've written something but having trouble with concatenating form field names and variable names.
Is anyone able to point me in the right direction please.
Javascript:
var i = 1;
var iChildren = 2; //could be any number - depends what user selected.
function toggle(switchElement) {
for (i = 1; i = iChildren; i++) {
var frmSchoolSelected+i = document.getElementById('<%=c_' & i & '_selected.ClientID%>');
var frmSchoolAge+i = document.getElementById('<%=c_' & i & '_type.ClientID%>');
var frmSchoolType+i = document.getElementById('<%=c_' & i & '_type1.ClientID%>');
var frmSchoolAdditional+i = document.getElementById('<%=c_' & i & '_additional.ClientID%>');
if (switchElement.value == 'Yes') {
frmSchoolSelected+i.disabled = false;
frmSchoolAge+i.disabled = true;
frmSchoolType+i.disabled = true;
frmSchoolAdditional+i.disabled = true;
}
else {
frmSchoolSelected+i.disabled = true;
frmSchoolAge+i.disabled = false;
frmSchoolType+i.disabled = false;
frmSchoolAdditional+i.disabled = false;
}
}
}
Thanks for any help.
J.
EDITED
Example of generated form HTML.
<form method="post" action="schoolingform.aspx" onkeypress="javascript:return WebForm_FireDefaultButton(event, 'Button1')" id="form1">
<table id="Table1" cellspacing="0" cellpadding="0" style="border-width:0px;border-collapse:collapse;">
<tr>
<td><strong>School Selected</strong></td>
<td colspan="4"><span id="c_1_school_selected" onlick="javascript:toggle(this);">
<input id="c_1_school_selected_0" type="radio" name="c_1_school_selected" value="Yes" />
<label for="c_1_school_selected_0">Yes</label>
<input id="c_1_school_selected_1" type="radio" name="c_1_school_selected" value="No" />
<label for="c_1_school_selected_1">No</label>
</span></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<th>Child</th>
<th style="border-right:1px solid #dddddd;">School Name</th>
<th>School Type</th>
<th>School Type</th>
<th>Additional Information</th>
</tr>
<tr valign="top">
<td><strong>Fred Wilkinson</strong></td>
<td style="border-right:1px solid #dddddd;"><input name="c_1_selected" type="text" id="c_1_selected" disabled="disabled" class="aspNetDisabled" style="width:190px;" />
<input type="hidden" name="c_1_id" id="c_1_id" value="22" /></td>
<td><select name="c_1_type" id="c_1_type" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="Primary">Primary</option>
<option value="Secondary">Secondary</option>
<option value="Higher Education">Higher Education</option>
</select></td>
<td><select name="c_1_type1" id="c_1_type1" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="State">State</option>
<option value="Independent">Independent</option>
</select></td>
<td><textarea name="c_1_additional" rows="6" cols="30" id="c_1_additional" disabled="disabled" class="aspNetDisabled" style="width:190px;"></textarea></td>
</tr>
<tr>
<td><strong>School Selected</strong></td>
<td colspan="4"><span id="c_2_school_selected" onlick="javascript:toggle(this);">
<input id="c_2_school_selected_0" type="radio" name="c_2_school_selected" value="Yes" />
<label for="c_2_school_selected_0">Yes</label>
<input id="c_2_school_selected_1" type="radio" name="c_2_school_selected" value="No" />
<label for="c_2_school_selected_1">No</label>
</span></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<th>Child</th>
<th style="border-right:1px solid #dddddd;">School Name</th>
<th>School Type</th>
<th>School Type</th>
<th>Additional Information</th>
</tr>
<tr valign="top">
<td><strong>Sara Wilkinson</strong></td>
<td style="border-right:1px solid #dddddd;"><input name="c_2_selected" type="text" id="c_2_selected" disabled="disabled" class="aspNetDisabled" style="width:190px;" />
<input type="hidden" name="c_2_id" id="c_2_id" value="23" /></td>
<td><select name="c_2_type" id="c_2_type" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="Primary">Primary</option>
<option value="Secondary">Secondary</option>
<option value="Higher Education">Higher Education</option>
</select></td>
<td><select name="c_2_type1" id="c_2_type1" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="State">State</option>
<option value="Independent">Independent</option>
</select></td>
<td><textarea name="c_2_additional" rows="6" cols="30" id="c_2_additional" disabled="disabled" class="aspNetDisabled" style="width:190px;"></textarea></td>
</tr>
<tr>
<td align="right" colspan="5"></td>
</tr>
</table>
<input type="hidden" name="iChild" id="iChild" value="2" />
<input type="submit" name="Button1" value="Next" id="Button1" class="submitBtn" />
You are mixing .NET code and JavaScript code. Because .NET runs first, it will try to process the code as you have written it:
<%=c_' & i & '_selected.ClientID%>
and most likely generate an error message because that is invalid code.
A simpler solution might be to use a class name. Then with jQuery, you could condense all of your code into a single call:
$('.ClassName').toggle();
Illegal javascript syntax. You ARE mixing .net and JS
var frmSchoolSelected+i is not allowed.
Also your loop is assigning i instead of testing i (= versus ==)
try this
function toggle(switchElement) {
var clientId = '<%=c_1_selected.ClientID%>';
var isYes = switchElement.value == 'Yes';
for (var i=1; i==iChildren; i++) {
var frmSchoolSelected = document.getElementById(clientId.replace('_1_selected','_'+i+'_selected'));
var frmSchoolAge = document.getElementById(clientId.replace('_1_selected','_'+i+'_type'));
var frmSchoolType = document.getElementById(clientId.replace('_1_selected','_'+i+'_type1'));
var frmSchoolAdditional = document.getElementById(clientId.replace('_1_selected','_'+i+'_additional'));
frmSchoolSelected.disabled = !isYes;
frmSchoolAge.disabled = isYes;
frmSchoolType.disabled = isYes;
frmSchoolAdditional.disabled = isYes;
}
}
A few notes on your approach.
Be aware of how you're using this as it means different things in different contexts. In your case it would be better to pass in the index of the row you're toggling. Your server side code most likely knows what row it's currently generating so this should be easy to accomplish.
As others pointed out, you are mixing client side and server side. In this case i is a client side variable that you're trying to use in a '<%=c_'... which is a server side context
I'm not quite sure why you're putting a + into what should be a variable name, but using a plus sign as part of a variable name isn't legal in JavaScript
switchElement in this case isn't a CheckboxList as you're expecting it to be, it's just an html span element and as such won't have a meaningful value property. You have to look at the actual input elements inside it and see if the yes element is checked (for example).
If you were to go with a JavaScript solution you would need code along these lines
function toggle(i) {
var schoolSelected = document.getElementById('c_' + i + '_school_selected_0').checked;
// client side names of variables will be predictable so to an extent you can get away with
// hard-coding them. Not the best practice, but it'd work
var frmSchoolSelected = document.getElementById('c_' + i + '_selected');
var frmSchoolAge = document.getElementById('c_' + i + '_type');
var frmSchoolType = document.getElementById('c_' + i + '_type1');
var frmSchoolAdditional = document.getElementById('c_' + i + '_additional');
// JavaScript, like some other languages lets you chain assignments like this
frmSchoolSelected.disabled =
frmSchoolAge.disabled =
frmSchoolType.disabled =
frmSchoolAdditional.disabled = !schoolSelected;
}
If you were to approach this from jQuery side I would suggest making a few changes to your HTML as well. Your output can be thought of as a list of mini-forms so instead of having one large table with different rows corresponding to different parts, create a list (or a table with a single column if you aren't ready to give up on table based layout quite yet).
New HTML
<ul>
<li class="school1">
<!-- school information form goes here -->
...
<span id="c_1_school_selected" class="toggle" onclick='toggle("school1")'>
...
</li>
<li class="school2">
<!-- school information form goes here -->
...
<span id="c_1_school_selected" class="toggle" onclick='toggle("school2")'>
...
</li>
...
</ul>
New code
function toggle(row) {
var allInputs = $("#" + row + " :input")
.not(".toggle input:radio");
var state = $(".toggle :checked").val();
if (state == "Yes") {
allInputs.removeAttr("disabled");
} else {
allInputs.attr("disabled", "disabled");
}
}
There are two nice things about this approach:
You are no longer relying on knowing what the ClientID will be as you're dealing with input elements as input elements
You can now refactor this input form into some sort of a repeating control (like a ListView) so if you decide you'd like to change how each row is formatted, it'll be very easy to do (since it'll all be in one place).
I got there eventually, once I had worked out how to add the onclick attribute to the input tag instead of the span tag I could then concentrate on the javascript function.
Code behind
Adds onclick to input tag.
Dim newRadioYes As New RadioButton
newRadioYes.Text = "Yes"
newRadioYes.ID = "c_" & childID & "_school_selected_0"
newRadioYes.Attributes.Add("onclick", "javascript:toggle(this, " & childID & ");")
newRadioYes.Attributes.Add("value", "Yes")
newRadioYes.GroupName = "c_" & childID & "_school_selected"
Dim newRadioNo As New RadioButton
newRadioNo.Text = "No"
newRadioNo.ID = "c_" & childID & "_school_selected_1"
newRadioNo.Attributes.Add("onclick", "javascript:toggle(this, " & childID & ");")
newRadioNo.Attributes.Add("value", "No")
newRadioNo.GroupName = "c_" & childID & "_school_selected"
Generated HTML form
<form method="post" action="schoolingform.aspx" onkeypress="javascript:return WebForm_FireDefaultButton(event, 'Button1')" id="form1">
<table id="Table1" cellspacing="0" cellpadding="0" style="border-width:0px;border-collapse:collapse;">
<tr>
<td><strong>School Selected</strong></td>
<td colspan="4"><input id="c_1_school_selected_0" type="radio" name="c_1_school_selected" value="Yes" onclick="javascript:toggle(this, 1);" />
<label for="c_1_school_selected_0">Yes</label>
<input id="c_1_school_selected_1" type="radio" name="c_1_school_selected" value="No" onclick="javascript:toggle(this, 1);" />
<label for="c_1_school_selected_1">No</label></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<th>Child</th>
<th style="border-right:1px solid #dddddd;">School Name</th>
<th>School Type</th>
<th>School Type</th>
<th>Additional Information</th>
</tr>
<tr valign="top">
<td><strong>Fred Wilkinson</strong></td>
<td style="border-right:1px solid #dddddd;"><input name="c_1_selected" type="text" id="c_1_selected" disabled="disabled" class="aspNetDisabled" style="width:190px;" />
<input type="hidden" name="c_1_id" id="c_1_id" value="26" /></td>
<td><select name="c_1_type" id="c_1_type" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="Primary">Primary</option>
<option value="Secondary">Secondary</option>
<option value="Higher Education">Higher Education</option>
</select></td>
<td><select name="c_1_type1" id="c_1_type1" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="State">State</option>
<option value="Independent">Independent</option>
</select></td>
<td><textarea name="c_1_additional" rows="6" cols="30" id="c_1_additional" disabled="disabled" class="aspNetDisabled" style="width:190px;"></textarea></td>
</tr>
<tr>
<td><strong>School Selected</strong></td>
<td colspan="4"><input id="c_2_school_selected_0" type="radio" name="c_2_school_selected" value="Yes" onclick="javascript:toggle(this, 2);" />
<label for="c_2_school_selected_0">Yes</label>
<input id="c_2_school_selected_1" type="radio" name="c_2_school_selected" value="No" onclick="javascript:toggle(this, 2);" />
<label for="c_2_school_selected_1">No</label></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<th>Child</th>
<th style="border-right:1px solid #dddddd;">School Name</th>
<th>School Type</th>
<th>School Type</th>
<th>Additional Information</th>
</tr>
<tr valign="top">
<td><strong>Sara Wilkinson</strong></td>
<td style="border-right:1px solid #dddddd;"><input name="c_2_selected" type="text" id="c_2_selected" disabled="disabled" class="aspNetDisabled" style="width:190px;" />
<input type="hidden" name="c_2_id" id="c_2_id" value="27" /></td>
<td><select name="c_2_type" id="c_2_type" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="Primary">Primary</option>
<option value="Secondary">Secondary</option>
<option value="Higher Education">Higher Education</option>
</select></td>
<td><select name="c_2_type1" id="c_2_type1" disabled="disabled" class="aspNetDisabled">
<option selected="selected" value="State">State</option>
<option value="Independent">Independent</option>
</select></td>
<td><textarea name="c_2_additional" rows="6" cols="30" id="c_2_additional" disabled="disabled" class="aspNetDisabled" style="width:190px;"></textarea></td>
</tr>
<tr>
<td align="right" colspan="5"></td>
</tr>
</table>
<input type="hidden" name="iChild" id="iChild" value="2" />
<input type="submit" name="Button1" value="Next" id="Button1" class="submitBtn" />
Javascript function
function toggle(switchElement, childID) {
var frmSelected = document.getElementsByName('c_' + childID + '_school_selected');
var frmSchoolSelected = document.getElementById('c_' + childID + '_selected');
var frmSchoolAge = document.getElementById('c_' + childID + '_type');
var frmSchoolType = document.getElementById('c_' + childID + '_type1');
var frmSchoolAdditional = document.getElementById('c_' + childID + '_additional');
if (switchElement.value == 'Yes') {
frmSchoolSelected.disabled = false;
frmSchoolAge.disabled = true;
frmSchoolType.disabled = true;
frmSchoolAdditional.disabled = true;
}
else {
frmSchoolSelected.disabled = true;
frmSchoolAge.disabled = false;
frmSchoolType.disabled = false;
frmSchoolAdditional.disabled = false;
}
}
Thanks to those who pointed me in the right direction, much appreciated.

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