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I am trying to remove Items from a list with an on-click, what am I missing?

I am trying to remove an item every time it is clicked on but only a single item at a time (the item that was clicked on) when trying to make a 'to-do' list. I can easily remove all simultaneously but I am having a lot of issues trying to do it at an individual level. I thought this would work but hoping to get a second set of eyes on it.
var toDoCount = 0;
var todoarray = [];
window.onload = function() {
//user clicked on the add button in the to-do field add that text into the to-do text
$('#add-to-do').on('click', function(event) {
event.preventDefault();
//assign variable to the value entered into the textbox
var value = document.getElementById('to-do').value;
//test value
console.log(value);
var todoitem = $("#to-dos");
todoitem.attr("item-");
//prepend values into the html and add checkmark, checkbox, and line break to make list
var linebreak = "<br/>";
var todoclose = $("<button>");
todoclose.attr("data-to-do", toDoCount);
todoclose.addClass("checkbox");
todoclose.text("☑");
//prepend values to html
$("#to-dos").prepend(linebreak);
$("#to-dos").prepend(value);
$("#to-dos").prepend(todoclose);
toDoCount++;
todoarray.push(value);
console.log(todoarray);
//to remove item from checklist
$(document.body).on("click", ".checkbox", function() {
var toDoNumber = $(this).attr("data-to-do");
$("#item-" + toDoNumber).remove();
});
});
}
HTML is below
<div class ="col-4">
<!-- To Do List -->
<form onsubmit= "return false;">
<span id = "todo-item" type = "text">
<h4>Add your Agenda Here</h4>
<input id ="to-do" type = "text">
<input id ="add-to-do" value = "Add Item" type = "submit">
</span>
</form>
<div id="to-dos"></div>
</div>

don't need the number, just the element.
change...
$("#item-" + toDoNumber).remove();
to...
$(this).remove();
e.g.
$(document.body).on("click", ".checkbox", function() {
$(this).remove();
});

validating multiple controls in javascript

I am adding multiple controls on an .aspx page from the .vb page based on certain conditions.
My code looks like following:
Dim sb As New StringBuilder
sb.Append("<table border='0'cellpadding='0' cellspacing='0' width='50%' class ='tabledata' id='tblContent'>")
For Each item As myObject In myLst
sb.Append("<tr><td style='width:50%;' valign='top'>")
sb.Append("<textarea id=txt_comments" & i & " name='txt_comments' rows='5' cols='60'></textarea></td>")
sb.Append("<td style='width:15%' valign='top' align='center'><select ID = validate" & i & " name=ValidateValues style ='border:1;width:150px'><option value = ''>Select</option><option value = 'Yes'>Yes</option><option value = 'No'>No</option><br /><br /></td>")
sb.Append("</tr><tr>")
Next
sb.Append("</table>")
myContent.InnerHtml = sb.ToString
So here I am creating <textarea> and <select> dynamically and adding them to my div(myContent)
<div id="structuredContent" runat="server">
</div>
I have a button next where I need to validate for few conditions.
My validation rule is:
User has to select either yes or no from the dropdown(<select>)
If user select 'yes', they have to enter text in
<textarea>(minimum1 character, maximum 1000 characters)
If user select 'No', <textarea> should be disabled.
I am trying to validate like following:
function validateComments() {
var errorcheck = 0;
$("[id^=txt_comments]").each(function () {
var comment = $.trim($(this).val());
$("[id^=validate]").each(function () {
debugger;
var value = $(this).val();
if (comment == 0 && value == "Yes") {
debugger;
errorcheck = 1;
}
});
}); if (errorcheck == 1) {
//show error message
}
else {
ErrorHide();
return true;
}
}
I am able to validate only for one control(which is textarea) from the above code.
The textbox and respective dropdown should be validated along.
How do I add validation for dropdown and can I combine with in the same function.
Any help?
Thanks in advance.

I don't know how do you expect this like if (comment == 0) { to work.
You'll always get a string as a value and checking it with 0 would always return false. Rather you need to check it with "".
And to enable/disable textarea you'll have to attach an event to select tag and do whatever you want to do.
here is an example
$("#d").change(function(){
if($(this).val() === 'n'){
$("#t").prop('disabled', 'disabled')
}else{
$("#t").prop('disabled', false)
}
});
$('body').on('click', '#b', function() {
var text = $.trim($("#t").val());
if(text === "" && !$("#t").prop('disabled')){
alert("yo! not valid")
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<select id="d">
<option value="0">Select</option>
<option value="y">Yes</option>
<option value="n">No</option>
</select>
<textarea maxlength="50" id="t"></textarea>\
<button id="b">Validate</button>

Checkbox check event is not getting prevented

I have a set of set of checkboxes on which I want to restrict to check maximum of one. If the choice needs to be changed then first checked ones need to be unchecked but maximum limit needs to be one.
Here is the jquery code.
$('#ReportRow').on('click', 'input[type="checkbox"]', (function (event) {
alert("Hi");
var checkedReportValues = $('#ReportRow input:checkbox:checked').map(function () {
return this.value;
}).get();
if ($("#ReportRow input:checkbox:checked").length > 1) {
return false;
}
alert(checkedReportValues);
})
);
Here, the above code is restricting only one checkbox to be checked but when I am trying to check other, they first are being checked and then unchecked. Where I am doing wrong ?
Here is the dynamically created HTML.
//Add Code to Create CheckBox dynamically by accessing data from Ajax for the application selected above
var Reports = " User, Admin, Detail, Summary";
var arrReportscheckBoxItems = Reports.split(',');
var reportscheckBoxhtml = ''
for (var i = 0; i < arrReportscheckBoxItems.length; i++) {
reportscheckBoxhtml += ' <label style="font-weight: 600; color: #00467f !important;"><input type="checkbox" value=' + arrReportscheckBoxItems[i] + '>' + arrReportscheckBoxItems[i] + '</label>';
}
//Add Submit button here
reportscheckBoxhtml += ' <button type="button" id="SubmitReport" class="btn btn-primary">Submit</button>';
$('#ReportRow').html(reportscheckBoxhtml);

Try this: uncheck all other checkboxes except clicked one inside click event handler, like below
$('#ReportRow').on('click', 'input[type="checkbox"]',function(){
$('#ReportRow input[type="checkbox"]').not(this).prop("checked",false);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="ReportRow">
<input type="checkbox">one
<input type="checkbox">Two
<input type="checkbox">Three
<input type="checkbox">Four
</div>

This line:
if ($("#ReportRow input:checkbox:checked").length > 1) {
return false;
}
is saying you want to uncheck the checkbox. It's doing exactly what you tell it to do. Just a comment: Users may be confused since checkboxes are meant to check multiple selections. Radio buttons are designed for being able to select only one option.

you are returning false from the function when there is a checkbox already selected, which is preventing the checkbox selection.
if ($("#ReportRow input:checkbox:checked").length > 1) {
return false;
}
Do something like this:
$('#ReportRow').on('click', 'input[type="checkbox"]', (function (event) {
alert("Hi");
var curCheckBox = this;
$('#ReportRow').find('input[type="checkbox"]').each(function() {
if(this === curCheckBox)
$(this).attr("checked",true);
else
$(this).attr("checked",false);
});
alert(checkedReportValues);
});

Jquery + When all previos fields (radio buttons,select and textbox) are filled then append a new box

This is my html output.
When user click on + (Add Tab) icon then how to check previos fields are filled or not
If any fields is empty then a error message will come.
jQuery('.add-contact').click(function (e) {
e.preventDefault();
// check previous box is field or not
{check code}
var siteUrl = jQuery(this).data('url');
var productId = jQuery(this).data('id');
var id = jQuery(".nav-tabs").children().length; //think about it ;)
var tabId = 'personalize_' + id;
jQuery(this).closest('li').before('<li>Personalize <span> x </span></li>');
var DataPersionalize = '<div class="tab-pane" id="' + tabId + '">';
DataPersionalize += '</div>';
// append data
jQuery('.tab-content').append(DataPersionalize);
jQuery('.nav-tabs li:nth-child(' + id + ') a').click();
});
How it is possible in case of radio button.
Thank

You could create an if else statement with all of the items in the original conditional separated by && and check if each of your input fields has a value with a length > 0 and for the radio button do $('.radio_button').is(':checked')) If they all pass then you can open the tab. If they don't pass you can $('.error-div').html("<div>Error Message</div>")

In case your radiobuttons all are in a group called ring and only one is selectable:
var isChecked = false,
radios = document.getElementsByName("ring");
for(radio in radios) {
isChecked = radios[radio].checked || isChecked;
}
console.log(isChecked);
HTML:
<input type="radio" id="ring1" name="ring">
<input type="radio" id="ring2" name="ring">
In case more than one are selectable, the same solution is usable, as long as you get the collection of required in the variable radios, lets say, id you use a class rings:
var radios = document.getElementsByClassName("rings");
HTML:
<input type="radio" id="ring1" class="rings">
<input type="radio" id="ring2" class="rings">

Javascript checkbox onChange

I have a checkbox in a form and I'd like it to work according to following scenario:
if someone checks it, the value of a textfield (totalCost) should be set to 10.
then, if I go back and uncheck it, a function calculate() sets the value of totalCost according to other parameters in the form.
So basically, I need the part where, when I check the checkbox I do one thing and when I uncheck it, I do another.

Pure javascript:
const checkbox = document.getElementById('myCheckbox')
checkbox.addEventListener('change', (event) => {
if (event.currentTarget.checked) {
alert('checked');
} else {
alert('not checked');
}
})
My Checkbox: <input id="myCheckbox" type="checkbox" />

function calc()
{
if (document.getElementById('xxx').checked)
{
document.getElementById('totalCost').value = 10;
} else {
calculate();
}
}
HTML
<input type="checkbox" id="xxx" name="xxx" onclick="calc();"/>

If you are using jQuery.. then I can suggest the following:
NOTE: I made some assumption here
$('#my_checkbox').click(function(){
if($(this).is(':checked')){
$('input[name="totalCost"]').val(10);
} else {
calculate();
}
});

Use an onclick event, because every click on a checkbox actually changes it.

The following solution makes use of jquery. Let's assume you have a checkbox with id of checkboxId.
const checkbox = $("#checkboxId");
checkbox.change(function(event) {
var checkbox = event.target;
if (checkbox.checked) {
//Checkbox has been checked
} else {
//Checkbox has been unchecked
}
});

HTML:
<input type="checkbox" onchange="handleChange(event)">
JS:
function handleChange(e) {
const {checked} = e.target;
}

Reference the checkbox by it's id and not with the #
Assign the function to the onclick attribute rather than using the change attribute
var checkbox = $("save_" + fieldName);
checkbox.onclick = function(event) {
var checkbox = event.target;
if (checkbox.checked) {
//Checkbox has been checked
} else {
//Checkbox has been unchecked
}
};

Javascript
// on toggle method
// to check status of checkbox
function onToggle() {
// check if checkbox is checked
if (document.querySelector('#my-checkbox').checked) {
// if checked
console.log('checked');
} else {
// if unchecked
console.log('unchecked');
}
}
HTML
<input id="my-checkbox" type="checkbox" onclick="onToggle()">

try
totalCost.value = checkbox.checked ? 10 : calculate();
function change(checkbox) {
totalCost.value = checkbox.checked ? 10 : calculate();
}
function calculate() {
return other.value*2;
}
input { display: block}
Checkbox: <input type="checkbox" onclick="change(this)"/>
Total cost: <input id="totalCost" type="number" value=5 />
Other: <input id="other" type="number" value=7 />

I know this seems like noob answer but I'm putting it here so that it can help others in the future.
Suppose you are building a table with a foreach loop. And at the same time adding checkboxes at the end.
<!-- Begin Loop-->
<tr>
<td><?=$criteria?></td>
<td><?=$indicator?></td>
<td><?=$target?></td>
<td>
<div class="form-check">
<input type="checkbox" class="form-check-input" name="active" value="<?=$id?>" <?=$status?'checked':''?>>
<!-- mark as 'checked' if checkbox was selected on a previous save -->
</div>
</td>
</tr>
<!-- End of Loop -->
You place a button below the table with a hidden input:
<form method="post" action="/goalobj-review" id="goalobj">
<!-- we retrieve saved checkboxes & concatenate them into a string separated by commas.i.e. $saved_data = "1,2,3"; -->
<input type="hidden" name="result" id="selected" value="<?= $saved_data ?>>
<button type="submit" class="btn btn-info" form="goalobj">Submit Changes</button>
</form>
You can write your script like so:
<script type="text/javascript">
var checkboxes = document.getElementsByClassName('form-check-input');
var i;
var tid = setInterval(function () {
if (document.readyState !== "complete") {
return;
}
clearInterval(tid);
for(i=0;i<checkboxes.length;i++){
checkboxes[i].addEventListener('click',checkBoxValue);
}
},100);
function checkBoxValue(event) {
var selected = document.querySelector("input[id=selected]");
var result = 0;
if(this.checked) {
if(selected.value.length > 0) {
result = selected.value + "," + this.value;
document.querySelector("input[id=selected]").value = result;
} else {
result = this.value;
document.querySelector("input[id=selected]").value = result;
}
}
if(! this.checked) {
// trigger if unchecked. if checkbox is marked as 'checked' from a previous saved is deselected, this will also remove its corresponding value from our hidden input.
var compact = selected.value.split(","); // split string into array
var index = compact.indexOf(this.value); // return index of our selected checkbox
compact.splice(index,1); // removes 1 item at specified index
var newValue = compact.join(",") // returns a new string
document.querySelector("input[id=selected]").value = newValue;
}
}
</script>
The ids of your checkboxes will be submitted as a string "1,2" within the result variable. You can then break it up at the controller level however you want.