Develop Reference

How to read input values based on checkbox checked?

How can I get the input value inside of the table that is associated with the next checkbox? I just need to get only those input values whose checkbox is checked. Display the value as an innerHTML of div comma separated.
I can get all the input value but I am not able to apply the logic for the checkbox
I tried for all the input box values.
let olist = [...document.querySelectorAll('table tbody tr')].map(row => {
const childs = row.querySelectorAll("input");
return {
oKey: parseInt(childs[1].value),
}
})
function checkboxChecked(event) {
let final = document.getElementById("final");
}
<table>
<thead>
<tr>
<td>Checbox</td>
<td>Key</td>
</tr>
</thead>
<tbody>
<tr>
<td><input type="checkbox" onclick="checkboxChecked(event)"></td>
<td><input type="number" value=1></td>
</tr>
<tr>
<td><input type="checkbox" onclick="checkboxChecked(event)"></td>
<td><input type="number" value=2></td>
</tr>
<tr>
<td><input type="checkbox" onclick="checkboxChecked(event)"></td>
<td><input type="number" value=3></td>
</tr>
</tbody>
</table>
<div id="final"></div>

You are using the Array.prototype.map() function to create an array with transformed values. That's fine. But you want to include only values where the corresponding checkbox is checked. You can do that by adding a call to the Array.prototype.filter() function.
There are multiple ways to do this. One of the easiest solutions would be to first call map() to create an array with items containing the checkbox values and the corresponding number values, then use filter() to create an array with only the checked items, and then use map() again to get an array with the resulting number values. Something like this:
let olist =
[...document.querySelectorAll('table tbody tr')]
.map(row => {
const children = row.querySelectorAll('input');
return {
checked: children[0].checked,
value: parseInt(children[1].value)
}
})
.filter(item => item.checked)
.map(item => item.value)
document.getElementById('final').innerHTML = olist.join(', ')
Note that you can probably omit the parseInt call inside the first map callback function as well, because afterwards you are just concatenating those values into a string again.
Edit
An even shorter alternative would be something like this:
let olist =
[...document.querySelectorAll('table tbody tr')]
.filter(row => row.querySelector('input[type=checkbox]').checked)
.map(row => row.querySelector('input[type=number]').value)
document.getElementById('final').innerHTML = olist.join(', ')

function checkboxChecked(event) {
let checkBox=event.path[0]
let input=event.path[2].children[1].children[0]
console.log(`Box Checked: ${checkBox.checked}\nValue: ${input.value}`)
}
<table>
<thead>
<tr>
<td>Checbox</td>
<td>Key</td>
</tr>
</thead>
<tbody>
<tr>
<td><input type="checkbox" onclick="checkboxChecked(event)"></td>
<td><input type="number" value=1></td>
</tr>
<tr>
<td><input type="checkbox" onclick="checkboxChecked(event)"></td>
<td><input type="number" value=2></td>
</tr>
<tr>
<td><input type="checkbox" onclick="checkboxChecked(event)"></td>
<td><input type="number" value=3></td>
</tr>
</tbody>
</table>
<div id="final"></div>

Checkbox click event

I have a group of checkboxes inside a table where I want to change the value of a different column in the row when the checkbox is checked. I have researched for a solution but nothing I have found seems to solve my problem. I realize that my stumbling block is my unfamiliarity with jquery so any suggestions would help. Ultimately I wish to total the columns where the change has occurred to get a total. So if an answer included ideas about that as well I would not complain. Thanks as always, you are a great group.
HTML
<tr>
<td><input name="amputeeGolfer" type="checkbox" id="amputeeGolfer" value="amputee" onchange="changeFee"/>
<label for="amputeeGolfer">Amputee Golfer</label></td>
<td align="left"><label for="amputeeFee">$50.00</label></td>
<td></td>
<td><input name="amputeeFee" type="number" id="amputeeFee" class="tblRight" size="10" value="0.00"/></td>
</tr>
jquery
<script>
function changeFee(val) {
$('#amputeeFee').val(), "$50.00";
}
</script>

Fully functioning snippet. No jQuery required!
When the onchange event fires, it checks whether the checkbox was just checked or unchecked, and toggles the price accordingly. It can even be combined with all sorts of other checkboxes.
function togglePrice(element,price){
if(element.checked){
document.getElementById("amputeeFee").value = parseInt(document.getElementById("amputeeFee").value) + price;
}else{
document.getElementById("amputeeFee").value = parseInt(document.getElementById("amputeeFee").value) - price;
}
}
<tr>
<td><input name="amputeeGolfer" type="checkbox" id="amputeeGolfer" value="amputee" onchange="togglePrice(this,50);"/>
<label for="amputeeGolfer">Amputee Golfer</label></td>
<td align="left"><label for="amputeeFee">$50.00</label></td>
<td></td>
<td><input name="amputeeFee" type="number" id="amputeeFee" class="tblRight" size="10" value="0"/></td>
</tr>
It works perfectly and you can even set how much the checkbox adds to the cost!

You can get closest tr closest('tr') to assure input in same row with check box and find input with name find("input[name='amputeeFee']") and change value for it.
function changeFee(val) {
var amputeeFee = $(val).closest('tr').find("input[name='amputeeFee']");
if($(val).prop("checked")){
amputeeFee.val(50.00);
}
else{
amputeeFee.val(0);
}
}
function changeFee(val) {
var amputeeFee = $(val).closest('tr').find("input[name='amputeeFee']");
//console.log(amp.length);
if($(val).prop("checked")){
amputeeFee.val(50.00);
}
else{
amputeeFee.val(0);
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<td><input name="amputeeGolfer" type="checkbox" id="amputeeGolfer" value="amputee" onchange="changeFee(this)"/>
<label for="amputeeGolfer">Amputee Golfer</label></td>
<td align="left"><label for="amputeeFee">$50.00</label></td>
<td></td>
<td><input name="amputeeFee" type="number" id="amputeeFee" class="tblRight" size="10" value="0.00"/></td>
</tr>
</table>

To call a JavaScript function like changeFee(val) in an HTML's element event, the funciton has to be called as the same in the script. As all functions in an HTML' event: <element onclick="myFunction()">, and not <element onclick="myFunction"> beacuse it doesn't reconize it's a function in JavaScript.
Then the code will be:
<tr>
<td><input name="amputeeGolfer" type="checkbox" id="amputeeGolfer" value="amputee" onchange="changeFee(this.value)"/>
<label for="amputeeGolfer">Amputee Golfer</label></td>
<td align="left"><label for="amputeeFee">$50.00</label></td>
<td></td>
<td><input name="amputeeFee" type="number" id="amputeeFee" class="tblRight" size="10" value="0.00"/></td>

Value not displaying in correct input

I have a 2 row table with input fields that does a calculation when I focusout on the first input. The problem I am experiencing is when I focusout on the second row, my new value is displayed in the first row corresponding input. I'm not sure why this is happening. I would greatly appreciate your help.
My expectation is when I enter a value in a row input (Cost) and focusout the new value should be set in the same row but in the input (New Cost).
function Calculate(element) {
var dollar = 216.98;
var id = element.id;
var oldcost = $(element).val();
var newcost = oldcost * dollar;
$("#" + id).closest("tr").find("td #new").val(newcost);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<th>Cost</th>
<th>New Cost</th>
</tr>
<tr>
<td><input type="number" id="old" onfocusout="Caluculate(this)" /></td>
<td><input type="number" new="new" /></td>
</tr>
<tr>
<td><input type="number" id="old" onfocusout="Caluculate(this)" /></td>
<td><input type="number" new="new" /></td>
</tr>
</table>

There's several issues here. Firstly you're repeating the same id attribute which is invalid; they must be unique. I'd suggest using a class instead. Secondly, there's is no new attribute. I presume that's a typo and should be an id, but again see my first point.
Next, the function you defined is named Calculate() yet the call is to Caluculate().
Then you should also be using unobtrusive event handlers as on* event attributes are very outdated and should be avoided where possible. As you've already included jQuery in the page you can use the on() method. The input event would seem to be more applicable to your usage as well, especially given it also catches the up/down arrow usage on the number control, although you can change this to blur if preferred.
Finally, it's a simply a matter of amending your DOM traversal logic to work with the new classes, like this:
var dollar = 216.98;
$('.old').on('input', function() {
var oldcost = $(this).val();
var newcost = oldcost * dollar;
$(this).closest("tr").find(".new").val(newcost);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<th>Cost</th>
<th>New Cost</th>
</tr>
<tr>
<td><input type="number" class="old" /></td>
<td><input type="number" class="new" /></td>
</tr>
<tr>
<td><input type="number" class="old" /></td>
<td><input type="number" class="new" /></td>
</tr>
</table>

Your use of id's is kind of messed up. First of all be sure to use an id once in the entire HTML file.
For your usecase better use classes.
Also be sure to type your function names correct ;)
function Calculate(element) {
var dollar = 216.98;
var parent = $(element).closest('tr');
var oldcost = $(element).val();
var newcost = oldcost * dollar;
parent.find(".new").val(newcost.toFixed(2));
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<th>Cost</th>
<th>New Cost</th>
</tr>
<tr>
<td><input type="number" class="old" onfocusout="Calculate(this)" /></td>
<td><input type="number" class="new" /></td>
</tr>
<tr>
<td><input type="number" class="old" onfocusout="Calculate(this)" /></td>
<td><input type="number" class="new" /></td>
</tr>
</table>

They have the same ID. You need to make the ID different

Firstly, there is a a typo.Change caluculate to calculate
There must not be the same id two elemnts have the same id.You could change the id of the first to old-1 or something different

Maximum call stack size exceeded in AngularJS

I am loading data from SQL table using AngularJS and web API. I made a function that shows values in input texts when a row is selected from HTML table. I got this error when i click on any row on the html table when debug.
The HTML
<td>Code</td>
<td><input type="text" size="10" pattern="^[a-zA-Z0-9]+$" title="Alphnumeric" required autofocus ng-model="selectedMember.Code.Staff_Type_Code">
<input type="text" size="10" hidden ng-model="selectedMember.sys_key" /> </td>
</tr>
<tr>
<td>Latin Description</td>
<td><input type="text" required size="35" ng-model="selectedMember.Latin.L_Desc"></td>
</tr>
<tr>
<td>Local Description</td>
<td><input type="text" required size="35" ng-model="selectedMember.Local.A_Desc"></td>
</tr>
<tbody>
<tr ng-repeat="c in Contracts | filter:selectedMember.Code | filter:selectedMember.Latin | filter:selectedMember.Local ">
<td style="display:none;">{{c.sys_key}}</td>
<td>{{c.Staff_Type_Code}}</td>
<td>{{c.L_Desc}}</td>
<td>{{c.A_Desc}}</td>
<td>{{c.Hours_Day}}</td>
<td>{{c.Days_Week}}</td>
<td>{{c.Type_EndWork}}</td>
<td>{{c.Num_EndWork}}</td>
</tr>
</tbody>
Controller.js
$scope.selectedMember = { Code: "",sys_key:"", Latin:"" , Local:"", Hours_Day :"", Days_Week:"", Num_EndWork:"" }
$scope.showInEdit = function (member)
{
debugger;
$scope.selectedMember = member;
$scope.selectedMember.Code = member;
$scope.selectedMember.Latin = member;
$scope.selectedMember.Local = member;
}
when I comment the last 3 lines, selected row values are not displayed in input texts. or i must cancel the filter. is there is a way to work both both
Any help would be appreciated , thanks in advance

You can sometimes get this if you accidentally import/embed the same JS file twice, worth checking in your resources tab of the inspector . or if you are calling a function which is calling another function and so forth .

How do I locate elements in the same row as another in a dynamic table?

I am making a page that contains a table with a button to add a row. It is a table for users to input data, and will eventually be submitted to a database.
Currently, I have a price and a quantity field in each row. When either of them change, I want to calculate the total and write it to another cell.
This is my event handler (wrapped in $(document).ready()):
$(".quantity_input, .price_input").change(function () {
console.log(this.value);
cal_total();
});
This is my current code:
function cal_total() {
if (isNaN(parseFloat(this.value))) {
alert("You must enter a numeric value.");
this.value = "";
return;
}
var cell = this.parentNode;
var row = cell.parentNode;
var total = parseFloat($("#items_table tr").eq(row.index).find("td").eq(3).find("input").first().val()) * parseFloat($("#items_table tr").eq(row.index).find("td").eq(4).find("input").first().val());
if (!isNaN(total)) {
$("#items_table tr").eq(row.index).find("td").eq(5).html(total.toFixed(2));
}
}
And this is what the inputs look like:
<input type='text' class='fancy_form quantity_input' name='quantities[]' size='4' style='text-align:center;border-bottom:none;'>
In addition to my original question, the event is never fired. Can anyone see why?
But more importantly, is this the best way to retrieve the values? I really don't think so but I cant come up with anything more clever.
Thank you!

you have to pass paremeter to calc_total to define input or tr
try this code
$(".quantity_input, .price_input").change(function () {
$(".quantity_input, .price_input").change(function () {
cal_total(this);
});
});
function cal_total(elem){
var row=$(elem).closest("tr")
var quantity=row.find(".quantity_input").val()-0
var price=row.find(".price_input").val()-0
var total=quantity * price
row.find(".totl_input").val(total)
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<td>
<input class="quantity_input" />
</td>
<td>
<input class="price_input" />
</td>
<td>
<input class="totl_input" />
</td>
</tr>
<tr>
<td>
<input class="quantity_input" />
</td>
<td>
<input class="price_input" />
</td>
<td>
<input class="totl_input" />
</td>
</tr>
<tr>
<td>
<input class="quantity_input" />
</td>
<td>
<input class="price_input" />
</td>
<td>
<input class="totl_input" />
</td>
</tr>
</table>