Develop Reference

Javascript .val change doesn't input value?

I'm trying to input something into a text field based on an option selected from a dropdown, using .val(), but it is not working.
$('#addressee_type').on('change', function() {
var type = $("select#addressee_type option:selected").attr('value');
// alert(type);
if (type == 'I') {
$('#name').attr('required', true).val('insured')
} else if (type == 'A') {
$('#name').attr('required', true).val('third party adv')
} else if (type == 'C') {
$('#name').attr('required', true).val('third party')
} else {
$('#name').attr('required', true).val('')
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-sm-4">
<label class="required">Addressee type</label>
<select class="form-control chosen" id="addressee_type" name="addressee_type" required>
<option value="" selected>Please select Addressee type</option>
<option value="I">Insured</option>
<option value="A">Third Party Advocate</option>
<option value="C">Third Party Claimant</option>
</select>
</div>
<div class="col-sm-4">
<label class='required'>Addressee Name</label>
<input class="form-control" readonly="true" id="name" type="text" name="name">
</div>
I added the attr() later on from a solution I found, but it still didn't solve the error.
Does anyone have an idea?

Some inputs disabled when checked option

Hello i would like to add function to my form when i select one option then some inputs of my form are disabled i tried to do this in jquery but something is not working.Could u help me wit this?
There is a example form:
<div class="col-4">
<label>Enabled </label>
<select name="stato" id="stato" class="form-control">
<option value="Text1">Text1</option>
<option value="Text2">Text2</option>
<option value="Text3">Text3</option>
<option value="Text4">Text4</option>
</select>
</div>
<div class="col-4" >
<label>Disabled when choose option in select</label>
<input id="data_consegna" type="text" class="form-control" name="data_consegna" placeholder="Data Consegna" />
</div>
and function in jquery
$(function() {
$('#data_consegna').prop('disabled', true);
$('#stato option').each(function() {
if ($(this).is('selected')) {
$('#data_consegna').prop('enabled', true);
} else {
$('#data_consegna').prop('enabled', false);
}
});
});

enter code here
$(function() {
//Triggering change event handler on element #stato
$('#stato').change(function() {
var value = $(this).val(); //Getting selected value from #stato
if (value == "") {
$('.common_disable').prop('disabled', false); //If value is empty then disable another field
} else {
$('.common_disable').prop('disabled', true); //Else enable another field
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<div class="col-4">
<label>Enabled </label>
<select name="stato" id="stato" class="form-control">
<option value="">Select One</option>
<option value="Text1">Text1</option>
<option value="Text2">Text2</option>
<option value="Text3">Text3</option>
<option value="Text4">Text4</option>
</select>
</div>
<div class="col-4" >
<label>Disabled when choose option in select</label><br>
<input id="data_consegna" type="text" class="form-control common_disable" name="data_consegna" placeholder="Data Consegna" /><br>
<input id="data_consegna2" type="text" class="form-control common_disable" name="data_consegna2" placeholder="Data Consegna2" /><br>
<input id="data_consegna3" type="text" class="form-control common_disable" name="data_consegna3" placeholder="Data Consegna3" /><br>
</div>
Please check above solution. It will enable input box at initial level. when you select one value, then it will disable input box.

Showing an input text field when user selects certain element from select menu

Im trying to get this code to run with only plain JS.
When the user selects 'Other' I want my input field to show but only when they select 'Other'.
Ive hidden the input so its not displayed before its called.
I set a listener on the select field
Created the if/else statement looking for the value of the select field and set that to the value of other.
What am I missing here?
const select = document.getElementById('title');
let textField = document.getElementById('other-title').style.display = "none";
//This sets the focus on the first input field
function setFocusToTextBox(){
document.getElementById("name").focus();
}
setFocusToTextBox();
select.addEventListener("change", function() {
if(select.value === 'other') {
textField.style.display = "block";
} else {
textField.style.display = "none";
}
});
<fieldset>
<legend>Basic Info</legend>
<label for="name">Name:</label>
<input type="text" id="name" name="user-name" placeholder="Enter Your Full Name">
<label for="mail">Email:</label>
<input type="email" id="mail" name="user-email" placeholder="Enter Valid Email">
<label for="title">Job Role</label>
<select id="title" name="user-title">
<option value="full-stack js developer">Full Stack JavaScript Developer</option>
<option value="front-end developer">Front End Developer</option>
<option value="back-end developer">Back End Developer</option>
<option value="designer">Designer</option>
<option value="student">Student</option>
<option value="other">Other</option>
</select>
<label for="other-title">Other Title</label>
<input type="text" id="other-title" name="job_role_other" placeholder="Your Job Role">
</fieldset>

The problem is here:
let textField = document.getElementById('other-title').style.display = "none"
You are assigning textField string value "none".
Do this instead:
let textField = document.getElementById('other-title');
document.getElementById('other-title').style.display = "none";

This works:
const select = document.getElementById('title');
var textField = document.getElementById('other-title');
var otherTitleLabel = document.getElementById('other-title-label');
//This sets the focus on the first input field
document.getElementById('other-title').style.display = "none";
otherTitleLabel.textContent="";
function setFocusToTextBox(){
document.getElementById("name").focus();
}
setFocusToTextBox();
select.addEventListener("change", function() {
if(select.value === 'other') {
textField.style.display = "block";
} else {
textField.style.display = "none";
otherTitleLabel.textContent="";
}
});
<fieldset>
<legend>Basic Info</legend>
<label for="name">Name:</label>
<input type="text" id="name" name="user-name" placeholder="Enter Your Full Name">
<label for="mail">Email:</label>
<input type="email" id="mail" name="user-email" placeholder="Enter Valid Email">
<label for="title">Job Role</label>
<select id="title" name="user-title">
<option value="full-stack js developer">Full Stack JavaScript Developer</option>
<option value="front-end developer">Front End Developer</option>
<option value="back-end developer">Back End Developer</option>
<option value="designer">Designer</option>
<option value="student">Student</option>
<option value="other">Other</option>
</select>
<label for="other-title" id="other-title-label">Other Title</label>
<input type="text" id="other-title" name="job_role_other" placeholder="Your Job Role">
</fieldset>

How do I enable my form's submit button using jquery?

I have a basic form with some input fields and a dropdown(select field).
Almost all fields have a form of validation. When a field has an error, an error message with the CSS class 'errorText' is displayed next to the field.
By default, my submit button is 'disabled'. I want to remove the 'disabled' attribute from my submit button once all tags with 'errorText' CSS classes are hidden/removed.
my current script just hides all tags with 'errorText' when an error occurs. how do I stop it from doing that and how can I enable my submit button once all fields have been properly enter/validated? Thanks.
EDIT: SOLVED. CODE UPDATED.
// Field Validations
$('#firstName')
.on('blur', function() {
var $this = $(this);
if ($this.val() == '') {
$('label[for="firstName"]').addClass('errorText');
$('#errorFName').show();
} else {
$('label[for="firstName"]').removeClass('errorText');
$('#errorFName').hide();
}
});
$('#lastName')
.on('blur', function() {
var $this = $(this);
if ($this.val() == '') {
$('label[for="lastName"]').addClass('errorText');
$('#errorLName').show();
} else {
$('label[for="lastName"]').removeClass('errorText');
$('#errorLName').hide();
}
});
$('#state')
.on('blur', function() {
var $this = $(this);
if ($('#state').val() == "") {
$('label[for="state"]').addClass('errorText');
$('#errorState').show();
} else {
$('label[for="state"]').removeClass('errorText');
$('#errorState').hide();
}
});
// Submit Button validation
$('input, select').on('keyup, blur', function() {
if ($('.errorText:visible').length ||
$('#firstName' || '#lastName' || '#state').val() == '' ) {
$('input[type="submit"]').prop('disabled', true);
} else if ($('#firstName').val() != '' &&
$('#lastName').val() != '' &&
$('#state').val() != '' ) {
$('input[type="submit"]').prop('disabled', false);
}
});
.errorText {
color: #c4161c;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<div>
<label for="firstName" class="required">First Name</label>
</div>
<div>
<input type="text" name="firstName" id="firstName" />
</div>
<div class="errorText" id="errorFName" style="display:none;">Please enter a First Name</div>
<br />
<div>
<label for="lastName" class="required">Last Name</label>
</div>
<div>
<input type="text" name="lastName" id="lastName" />
</div>
<div class="errorText" id="errorLName" style="display:none;">Please enter a Last Name</div>
<br />
<div>
<label for="state" class="required">State</label>
</div>
<div>
<select name="state" id="state">
<option value="">Select State</option>
<option value="alabama">Alabama</option>
<option value="alaska">Alaska</option>
<option value="arizona">Arizona</option>
<option value="arkansas">Arkansas</option>
<option value="california">California</option>
<option value="etc">etc..</option>
</select>
</div>
<div class="errorText" id="errorState" style="display:none;">Please select a State</div>
<br />
<input type="submit" class="LargeButton" value="Submit Referral" disabled />

If it helps, check this update using data-attribute. We group the label,input,error in a div and handle error message. Also simplified the check valid on input and select element but can be modified.
html
<div>
<label for="firstName" class="required">First Name</label>
<input type="text" name="firstName" id="firstName" />
<span class="errorText" style="display:none;">Please enter a First Name</span>
</div>
<br />
<div>
<label for="lastName" class="required">Last Name</label>
<input type="text" name="lastName" id="lastName" />
<span class="errorText" style="display:none;">Please enter a Last Name</span>
</div>
<br />
<div>
<label for="state" class="required">State</label>
<select name="state" id="state" data-valid="">
<option value="">Select State</option>
<option value="alabama">Alabama</option>
<option value="alaska">Alaska</option>
<option value="arizona">Arizona</option>
<option value="arkansas">Arkansas</option>
<option value="california">California</option>
<option value="etc">etc..</option>
</select>
<span class="errorText" style="display:none;">Please select a State</span>
</div>
<br />
<input type="submit" id="submit" class="LargeButton" value="Submit Referral" disabled />
script
$(function() {
$('input,select')
.on('blur', function() {
var $this = $(this);
if ($this.val() == '') {
$this.data("valid", 'false');
//find the immediate span with errorText and show it
$this.next("span.errorText").show();
} else {
$this.data("valid", 'true');
$this.next("span.errorText").hide();
}
checkInputs();
});
});
function checkInputs() {
//find all the input and select items where the data attribute valid is present and make an array
var array = $('input,select').map(function() {
return $(this).data("valid");
}).get();
//if there are not empty or false indicating invalid value set submit property to true
if (array.indexOf("") == -1 && array.indexOf("false") == -1) {
$("#submit").prop("disabled", false);
} else {
$("#submit").prop("disabled", true);
}
}
css
.errorText {
color: #c4161c;
display: block;
}

Can't keep CSS change via Javascript

I have a simple "select" - show below.
<label>Best way to reach you?</label><br>
<select id="contactMethod">
<option value="wp">Work Phone?</option>
<option value="cp">Personal Cell Phone?</option>
<option value="email">Email?</option>
<option value="Im">Instant Messanger?</option>
</select>
<button onclick="showHidden()">Which way?</button>
the object I wish to show is in the HTML with the following properties:
<label>E-mail Address:</label>
<input id="email" type="text" style='display:none'>
I then have a .js file with the following function.
function showHidden() {
var dropSelection = document.getElementById("contactMethod").value;
console.log(dropSelection)
if(dropSelection == "email") {
document.getElementById("email").style.display = "block";
}
}
I then have the id listed within my CSS as the following:
#email{ display:none; }
The goal is to "show" the email text box when the "email" option is selected from the <select> above.
As of right now, I'm simply printing what was selected, so I can know for sure that I'm getting the right values to run the if statement against. That being said, when I select the email option, it literally flashes the email text box but immediately reverts back to a hidden state.
UPDATED CODE
<label>Best way to reach you?</label><br>
<select onchange="showHidden()" id="contactMethod">
<option value="select">Select...</option>
<option value="email">Email</option>
<option value="phone">Work Phone</option>
<option value="cPhone">Cell Phone</option>
<option value="Im">Instant Messanger</option>
</select>
MODIFIABLE FIELDS
<label id="emailLabel">E-mail Adress:</label>
<input id="email" type="text">
<label id="phoneLabel">Work Phone Number</label>
<input id="phone" type="text">
<label id="cPhoneLabel">Personal Cell Phone Number</label>
<input id="cPhone" type="text">
<label id="IMLabel">Instant Messenger Name</label>
<input id="Im" type="text">
JS
function showHidden() {
var dropSelection = document.getElementById("contactMethod").value;
if(dropSelection == "email") {
document.getElementById("email").style.display = "block";
document.getElementById("emailLabel").style.display = "inline";
}
else if(dropSelection == "phone") {
document.getElementById("phone").style.display = "block";
document.getElementById("phoneLabel").style.display = "inline";
}
else if(dropSelection == "cPhone") {
document.getElementById("cPhone").style.display = "block";
document.getElementById("cPhoneLabel").style.display = "inline";
}
else if(dropSelection == "Im") {
document.getElementById("Im").style.display = "block";
document.getElementById("IMLabel").style.display = "inline";
}
}

function showHidden(){
var dropSelection = document.getElementById("contactMethod").value;
console.log(dropSelection)
if(dropSelection == "email"){
document.getElementById("email").style.display = "block";
}
}
#email{
display:none;
}
<label>Best way to reach you?</label>
<br>
<select id="contactMethod">
<option value="wp">Work Phone?</option>
<option value="cp">Personal Cell Phone?</option>
<option value="email">Email?</option>
<option value="Im">Instant Messanger?</option>
</select>
<br>
<button onclick="showHidden()">Which way?</button>
<br>
<label>E-mail Adress:</label>
<br>
<input id="email" type="text" display="none">
<br>
I don't see any problem, it works fine.