Develop Reference

How do i disable textboxes based on what radio button is clicked in JavaScript?

I am trying to disable text the text boxes according to the radio button clicked but I can't figure out why they wouldn't disable.
HTML CODE (containing Textboxes and HTML)
if (document.getElementById("cashbtn").checked)
{
document.getElementById("cardam").disabled = true;
}
else if (document.getElementById("cardbtn").checked)
{
document.getElementById("casham").disabled = true;
}
else if (document.getElementById("cashwcardbtn").checked)
{
document.getElementById("giftcheck").disabled = true;
}
<div class="container">
<h1>Payment Details</h1>
<h3>Amount</h3>
<input type="text" id="amounttxt">
<h3>Payment Type</h3>
<input type="radio" name="radAnswer" id="cashbtn">
<label for="cash">Cash</label></br>
<input type="radio" name="radAnswer" id="cardbtn">
<label for="card">Card</label></br>
<input type="radio" name="radAnswer" id="cashwcardbtn">
<label for="cashwcard">Cash and Card</label></body></br>
<h3>Gift Check</h3>
<input type="text" id="giftcheck" >
<h3>Cash Amount</h3>
<input type="text" id="casham">
<h3>Card Amount</h3>
<input type="text" id="cardam"></br>
<button onclick="submit()">Submit</button>
</div>

You need event listeners to listen for the radio options.
let radioBtns = document.getElementsByName('radAnswer')
Array.from(radioBtns).forEach(function (el) {
el.onchange = function (e) {
if (document.getElementById("cashbtn").checked)
{
document.getElementById("cardam").disabled = true;
}
else if (document.getElementById("cardbtn").checked)
{
document.getElementById("casham").disabled = true;
}
else if (document.getElementById("cashwcardbtn").checked)
{
document.getElementById("giftcheck").disabled = true;
}
}
})
<div class="container">
<h1>Payment Details</h1>
<h3>Amount</h3>
<input type="text" id="amounttxt">
<h3>Payment Type</h3>
<input type="radio" name="radAnswer" id="cashbtn">
<label for="cash">Cash</label></br>
<input type="radio" name="radAnswer" id="cardbtn">
<label for="card">Card</label></br>
<input type="radio" name="radAnswer" id="cashwcardbtn">
<label for="cashwcard">Cash and Card</label></body></br>
<h3>Gift Check</h3>
<input type="text" id="giftcheck" >
<h3>Cash Amount</h3>
<input type="text" id="casham">
<h3>Card Amount</h3>
<input type="text" id="cardam"></br>
<button onclick="submit()">Submit</button>
</div>

Validation input if using show hide jQuery

How do i validate if there is a div that uses display:none
$("input[name$='test']").click(function() {
var test = $(this).val();
$("div.desc").hide();
$("#test" + test).show();
});
$(".check").click(function(){
var name = $("#name").val();
var add = $("#add").val();
var hobby = $("#hobby").val();
if( name == "" ){
$("#name").css('border', '1px solid red');
return false
} else if ( add == "" ){
$("#add").css('border', '1px solid red')
} else if ( hobby == "" ){
$("#hobby").css('border', '1px solid red')
} else {
alert('success');
return true
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="myRadio">
<div class="condition">
<input type="radio" name="test" checked="checked" value="Y" id="first" />
<label for="first">First</label>
</div>
<div class="condition">
<input type="radio" name="test" value="N" id="second" />
<label for="second">Second</label>
</div>
<div class="condition">
<input type="radio" name="test" value="YN" id="third" />
<label for="third">Third</label>
</div>
</div>
<div id="testY" class="desc">
<label for="name">Name</label>
<input type="text" id="name" />
</div>
<div id="testN" class="desc" style="display:none">
<label for="add">Add</label>
<input type="text" id="add" />
</div>
<div id="testYN" class="desc" style="display:none">
<label for="hobby">Hobby</label>
<input type="text" id="hobby" />
</div>
<br>
<button class="check">Check</button>
When I fill in the first content and click validation, it should issue a success alert because my goal is to validate the div is showing.
Any idea?
Thank you

You can find the input need to check by checked radio value first then validate this input:
$("input[name$='test']").click(function() {
var test = $(this).val();
$("div.desc").hide();
$("#test" + test).show();
});
$(".check").click(function(){
let checked = $("input[name$='test']:checked").val();
let input = $("#test" + checked).find('input');
let val = input.val();
if(!val){
$(input).css('border', '1px solid red');
return false
}
alert('success');
return true
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="myRadio">
<div class="condition">
<input type="radio" name="test" checked="checked" value="Y" id="first" />
<label for="first">First</label>
</div>
<div class="condition">
<input type="radio" name="test" value="N" id="second" />
<label for="second">Second</label>
</div>
<div class="condition">
<input type="radio" name="test" value="YN" id="third" />
<label for="third">Third</label>
</div>
</div>
<div id="testY" class="desc">
<label for="name">Name</label>
<input type="text" id="name" />
</div>
<div id="testN" class="desc" style="display:none">
<label for="add">Add</label>
<input type="text" id="add" />
</div>
<div id="testYN" class="desc" style="display:none">
<label for="hobby">Hobby</label>
<input type="text" id="hobby" />
</div>
<br>
<button class="check">Check</button>

JavaScript: Display Multiple Divs on Single Button Click

I need to show a series of <div> elements one at a time when the user clicks a button. They start out hidden using <div style="display:none">. There are a total of 11 <div> tags each with different "id" from id="dt-1" to id="dt-11"
Here's the code I have now:
function adddt() {
var count;
for(count=1;count<6;count++)
{
document.getElementById('dt-'+count+'').style.display = 'block';
}
};
<div id='dt-1'>
<label>Destination 1</label>
<input type="text">
<input type="number">
</div>
<div id='dt-2' style="display:none;">
<label>Destination 2</label>
<input type="text">
<input type="number">
</div>
<div id='dt-3' style="display:none;">
<label>Destination 3</label>
<input type="text">
<input type="number">
</div>
<div id='dt-4' style="display:none;">
<label>Destination 4</label>
<input type="text">
<input type="number">
</div>
<div id='dt-5' style="display:none;">
<label>Destination 5</label>
<input type="text">
<input type="number">
</div>
<input type="button" onclick="adddt()" value="add more destinations">
As you can see, when you click the button it shows all of the <div>s,
not one at a time. Each click should only add a single <div>, not all of them.
First click - show <div id='dt-2'>
Second click - show <div id='dt-3'>
... and so on.

you can try this, use a variable where you store the current id and each time you increment it by 1 :
var count = 2;
var countMax = 5;
function adddt() {
if(count > countMax)
return;
document.getElementById('dt-' + count + '').style.display = 'block';
count++;
}
<div id='dt-1'>
<label>Destination 1</label>
<input type="text">
<input type="number">
</div>
<div id='dt-2' style="display:none;">
<label>Destination 2</label>
<input type="text">
<input type="number">
</div>
<div id='dt-3' style="display:none;">
<label>Destination 3</label>
<input type="text">
<input type="number">
</div>
<div id='dt-4' style="display:none;">
<label>Destination 4</label>
<input type="text">
<input type="number">
</div>
<div id='dt-5' style="display:none;">
<label>Destination 5</label>
<input type="text">
<input type="number">
</div>
<input type="button" onclick="adddt()" value="add more destinations">

validate inputs than close the div once filled out

I am really new to HTML,JavaScript and was just wondering how I would check to see if the input fields inside my fieldset were completed by the user, if so the fieldset collapses into its legend. Below I have created the script to collapse the fieldset into the legend, I just need to create the validation script but I don't know how to create it.
function doit2() {
if (document.getElementById('two').style.display == 'none') {
document.getElementById('two').style.display = 'block';
} else {
document.getElementById('two').style.display = 'none';
}
}
<fieldset>
<legend>Personal details</legend>
<div id="two">
<div>
<label>Surname or family name:</label>
<input type="text" name="personal" />
</div>
<div>
<label>Given name/names:</label>
<input type="text" name="personal" />
</div>
<div>
<label> Date of birth:</label>
<input type="date" name="personal" />
</div>
<div>
<label> Male </label>
<input type="radio" name="gender" value="Male" />
</div>
<div>
<label> Female </label>
<input type="radio" name="gender" value="Female" />
</div>
<div>
<label> N/A </label>
<input type="radio" name="gender" value="NA" />
</div>
</div>
</fieldset>

Try this:
function validateForm()
{
debugger;
var fields = ["surname", "name", "dob"]
var i, l = fields.length;
var fieldname;
for (i = 0; i < l; i++) {
fieldname = fields[i];
if (document.getElementsByName(fieldname)[0].value === "") {
alert(fieldname + " can not be empty");
return false;
}
}
return true;
}
function doit2() {
if(document.getElementById('two').style.display == 'none'){
document.getElementById('two').style.display = 'block';
} else {
if(validateForm()){
document.getElementById('two').style.display = 'none';
}
}
}
<fieldset id="fieldset">
<legend>Personal details</legend>
<div id="two">
<div>
<label>Surname or family name:</label>
<input type="text" name="surname"/>
</div>
<div>
<label>Given name/names:</label>
<input type="text" name="name"/>
</div>
<div>
<label> Date of birth:</label>
<input type="date" name="dob"/>
</div>
<div>
<label> Male </label>
<input type="radio" name="gender" value="Male" checked/>
</div>
<div>
<label> Female </label>
<input type="radio" name="gender" value="Female"/>
</div>
<div>
<label> N/A </label>
<input type="radio" name="gender" value="NA"/>
</div>
</div>
</fieldset>

The first step in validation you need to add to each input required inside input tag. Than if you fine with default validation you can leave it as is, other wise you can use regex. If yu decide to use any of the frameworks - bootstrap, angular - they have their own validators as well

You can use document.getElementById("[id of element]").value or document.getElementsByName("[Name of element]").value to get value of your inputs and validate them.for your case you can use document.getElementsByName Like this:
function validate() {
if (document.getElementsByName('personal')[0].value.length == 0) {
//set error
alert('error');
return false;
}
//Add other validation here
return true;
}
//....
function doit2() {
if (validate()) {
if (document.getElementById('two').style.display == 'none') {
document.getElementById('two').style.display = 'block';
} else {
document.getElementById('two').style.display = 'none';
}
}
}
<fieldset>
<legend>Personal details</legend>
<div id="two">
<div>
<label>Surname or family name:</label>
<input type="text" name="personal" />
</div>
</div>
</fieldset>

Apply Validation Function To All TextFields and Radio Buttons

I am a newbie in Javascript and can't figure out how to make my function work for both radio buttons and textfields.
Below is the HTML code for the form
<form action="sendmail.php" method="post" name="cascader"
onsubmit="prepareEventHandlers()" id="cascader">
<div class="TargetCenter"> <p><strong><span class="asterisk">*</span>Target Center</strong> </p>
<label>
<input type="checkbox" name="TargetCountry" value="allCountries" id="TargetCountry" />
All Countries</label>
<label>
<input type="checkbox" name="TargetCountry" value="France" id="TargetCountry" />
France</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Bolivia" id="CheckboxGroup1_1" />
Bolivia</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="North America" id="CheckboxGroup1_2" />
North America</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="United Kingdom" id="CheckboxGroup1_3" />
United Kingdom</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Baltics" id="CheckboxGroup1_4" />
Baltics</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Slovakia" id="CheckboxGroup1_5" />
Slovakia</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Sweden" id="CheckboxGroup1_6" />
Sweden</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Switzerland" id="CheckboxGroup1_7" />
Switzerland</label>
<br /> </div> <!--end of Cascade Target--> <div class="CascadeCategory"> <strong>
<span class="asterisk">*</span>Cascade Category: </strong> <label>
<input type="radio" name="cascadeCategory" value="Process" id="CascadeCategory_0" />
Process</label> <label>
<input type="radio" name="cascadeCategory" value="Training" id="CascadeCategory_1" />
Training</label> <label>
<input type="radio" name="cascadeCategory" value="Knowledge" id="CascadeCategory_2"/> Knowledge</label> <br /> </div> <!--end
of Cascade Category--> <div class="ProcessTitle"><strong><span
class="asterisk">*</span>Process Title: <input name="textfld"
type="text" id="processTitle" iname="processTitle"
onkeypress="checkFieldValue()" /> </strong><span
id="errorMessage"></span></div> <!--end of Process Title--> <div
class="CascadeType"> <strong><span class="asterisk">*</span>Cascade
Type:</strong> <label> <input type="radio" name="cascadeType"
value="Release" /> Release</label> <label>
<input type="radio" name="cascadeType" value="Update" id="CascadeType_1" />
Update</label> <label>
<input type="radio" name="cascadeType" value="Reminder" id="CascadeType_2" />
Reminder</label> <br /> </div> <!--end of Cascade Type--> <div class="QuickDescr"> <strong><span class="asterisk">*</span>Quick
Description: </strong><br /> <br /><textarea name="textfld" cols="70%"
rows="5" id="quickDescr"></textarea><span id="errorMessage2"></span>
</div> <!--end of Quick Description--> <div class="Details">
<strong><span class="asterisk">*</span>Details: </strong><br /><br/>
<textarea name="details" cols="70%" rows="10" id="details"></textarea> </div>
<!--end of Description--> <div class="DueDate"> <strong><span class="asterisk">*</span>Due
Date:</strong> <input type="text" class="Due" name="DueDate"
placeholder="mm.dd.yyyy" /> <span
class="DueDateFormat">(mm.dd.yyyy)</span></div> <!--end of Due date-->
<br /> <br /> <br /> <input name="Submit" type="submit"
class="CascadeButton" value="Send Cascade" />
<input type="reset" value="Clear Fields" class="ResetButton" />
</form>
Below is the Javascript I applied for the processTitle textfield.
function prepareEventHandlers() {
document.getElementById("cascader").onsubmit = function() {
// prevent a form from submitting if no email.
if (document.getElementById("processTitle").value == "") {
document.getElementById("errorMessage").innerHTML = "Please enter a value";
// to STOP the form from submitting
window.scrollTo(0, 0);
document.getElementById('processTitle').style.cssText = 'background-color: #f4fc99;';
// to turn the field background color
return false;
} else {
// reset and allow the form to submit
document.getElementById("errorMessage").innerHTML = "";
return true;
}
};
}
// when the document loads
window.onload = function() {
prepareEventHandlers();
};
// Changes the field color onFocus
function checkFieldValue() {
if (document.getElementById("processTitle").value != "") {
document.getElementById('processTitle').style.cssText = 'background-color: #FFF;';
document.getElementById("errorMessage").innerHTML = "";
}
else document.getElementById('processTitle').style.cssText = 'background-color: #f4fc99;';
}

I've added a little function to check if one of the radio buttons is selected. See checkRequiredRadioButtons at the bottom of the javascript. Currently I just linked it to your existing validation-failure code.
function prepareEventHandlers() {
document.getElementById("cascader").onsubmit = function() {
// prevent a form from submitting if no email.
if (document.getElementById("processTitle").value == "" || !checkRequiredRadioButtons('cascadeType')) {
document.getElementById("errorMessage").innerHTML = "Please enter a value";
// to STOP the form from submitting
window.scrollTo(0, 0);
document.getElementById('processTitle').style.cssText = 'background-color: #f4fc99;';
// to turn the field background color
return false;
} else {
// reset and allow the form to submit
document.getElementById("errorMessage").innerHTML = "";
return true;
}
};
}
// when the document loads
window.onload = function() {
prepareEventHandlers();
};
// Changes the field color onFocus
function checkFieldValue() {
if (document.getElementById("processTitle").value != "") {
document.getElementById('processTitle').style.cssText = 'background-color: #FFF;';
document.getElementById("errorMessage").innerHTML = "";
} else document.getElementById('processTitle').style.cssText = 'background-color: #f4fc99;';
}
function checkRequiredRadioButtons(buttonsName) {
var buttonSet = document.getElementsByName(buttonsName);
for(i = 0; i < buttonSet.length; i++){
if(buttonSet[i].checked == true)
return true;
}
return false;
}
<form action="sendmail.php" method="post" name="cascader" onsubmit="prepareEventHandlers()" id="cascader">
<div class="TargetCenter">
<p><strong><span class="asterisk">*</span>Target Center</strong>
</p>
<label>
<input type="checkbox" name="TargetCountry" value="allCountries" id="TargetCountry" />All Countries</label>
<label>
<input type="checkbox" name="TargetCountry" value="France" id="TargetCountry" />France
</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Bolivia" id="CheckboxGroup1_1" />Bolivia
</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="North America" id="CheckboxGroup1_2" />North America</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="United Kingdom" id="CheckboxGroup1_3" />United Kingdom</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Baltics" id="CheckboxGroup1_4" />Baltics
</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Slovakia" id="CheckboxGroup1_5" />Slovakia
</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Sweden" id="CheckboxGroup1_6" />Sweden
</label>
<label>
<input type="checkbox" name="CheckboxGroup1" value="Switzerland" id="CheckboxGroup1_7" />Switzerland
</label>
<br />
</div>
<!--end of Cascade Target-->
<div class="CascadeCategory"> <strong>
<span class="asterisk">*</span>Cascade Category: </strong>
<label>
<input type="radio" name="cascadeCategory" value="Process" id="CascadeCategory_0" />Process
</label>
<label>
<input type="radio" name="cascadeCategory" value="Training" id="CascadeCategory_1" />Training
</label>
<label>
<input type="radio" name="cascadeCategory" value="Knowledge" id="CascadeCategory_2" />Knowledge</label>
<br />
</div>
<!--end
of Cascade Category-->
<div class="ProcessTitle"><strong><span
class="asterisk">*</span>Process Title: <input name="textfld"
type="text" id="processTitle" iname="processTitle"
onkeypress="checkFieldValue()" /> </strong><span id="errorMessage"></span>
</div>
<!--end of Process Title-->
<div class="CascadeType"> <strong><span class="asterisk">*</span>Cascade
Type:</strong>
<label>
<input type="radio" name="cascadeType" value="Release" />Release</label>
<label>
<input type="radio" name="cascadeType" value="Update" id="CascadeType_1" />Update
</label>
<label>
<input type="radio" name="cascadeType" value="Reminder" id="CascadeType_2" />Reminder
</label>
<br />
</div>
<!--end of Cascade Type-->
<div class="QuickDescr"> <strong><span class="asterisk">*</span>Quick
Description: </strong>
<br />
<br />
<textarea name="textfld" cols="70%" rows="5" id="quickDescr"></textarea><span id="errorMessage2"></span>
</div>
<!--end of Quick Description-->
<div class="Details">
<strong><span class="asterisk">*</span>Details: </strong>
<br />
<br/>
<textarea name="details" cols="70%" rows="10" id="details"></textarea>
</div>
<!--end of Description-->
<div class="DueDate"> <strong><span class="asterisk">*</span>Due
Date:</strong>
<input type="text" class="Due" name="DueDate" placeholder="mm.dd.yyyy" /> <span class="DueDateFormat">(mm.dd.yyyy)</span>
</div>
<!--end of Due date-->
<br />
<br />
<br />
<input name="Submit" type="submit" class="CascadeButton" value="Send Cascade" />
<input type="reset" value="Clear Fields" class="ResetButton" />
</form>
If you're trying to dynamically determine whether you have a textbox or a radio button, you can call Element.getAttribute('type') and compare. As in:
var allInputs = document.getElementsByTagName('input');
for(i = 0; i < allInputs.length; i++){
if(allInputs[i].getAttribute('type') == 'radio'){
//Do radio button handling
} else if(allInputs[i].getAttribute('type') == 'text'){
//Do textbox handling
}
}
However, if you do that you need to be aware that for radio buttons you're going to iterate over all the radio buttons in the group, checked and unchecked alike. As well as your submit and reset buttons.

Maybe you should try the javascript getElementsByTagName() method:
function myFunction() {
var x = document.getElementsByTagName("input");
for (var i=0; i<x.length; i++){
if(x[i].value==""){
x[i].style.backgroundColor="red";
}
}
}