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jQuery reset of select form doesn't work correctly

I have a form with select tags which initially by default are set to an empty option. For them I have also JavaScript, which disables an option if it was already selected previously by the user.
What I want to do is have a reset all button which if the user wants to can reset all the options to default. This part works but if the user has already selected some options and the JavaScript has disabled them they don't reset and are not anymore selectable. See on the JsFiddle.
JsFiddle: https://jsfiddle.net/qgob6k9m/4/
My question is if there is a way to also restart the previously selected options. Restarting the page is not an option because then the form is sent again.
Thank you!
var $selects = $('select');
$selects.on('change', function() {
$("option", $selects).prop("disabled", false);
$selects.each(function() {
var $select = $(this),
$options = $selects.not($select).find('option'),
selectedText = $select.children('option:selected').text();
$options.each(function() {
if ($(this).text() == selectedText) $(this).prop("disabled",
true);
});
});
});
$selects.eq(0).trigger('change');
$("#button").on("click", function() {
$('#select1 option').prop('selected', function() {
return this.defaultSelected;
});
$('#select2 option').prop('selected', function() {
return this.defaultSelected;
});
$('#select3 option').prop('selected', function() {
return this.defaultSelected;
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form>
<select name="option" id="select1" size="1" required>
<option value="" selected="selected" disabled hidden>Options</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<select name="option" id="select2" size="1" required>
<option value="" selected="selected" disabled hidden>Options</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<select name="option" id="select3" size="1" required>
<option value="" selected="selected" disabled hidden>Options</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<input align="middle" id="button" type="button" value="Reset Form">
</form>

I think this will do the trick
$("#button").on("click", function(){
$('#select1 option').prop('selected', function(){
return this.defaultSelected;
}).prop('disabled', false);
$('#select2 option').prop('selected', function(){
return this.defaultSelected;
}).prop('disabled', false);
$('#select3 option').prop('selected', function(){
return this.defaultSelected;
}).prop('disabled', false);
});

You just need to remove the disabled attribut that you set on your option tag
Here is a fiddle of your project with the solution
var $selects = $('select');
$selects.on('change', function() {
$("option", $selects).prop("disabled", false);
$selects.each(function() {
var $select = $(this),
$options = $selects.not($select).find('option'),
selectedText = $select.children('option:selected').text();
$options.each(function() {
if ($(this).text() == selectedText) $(this).prop("disabled",
true);
});
});
});
$selects.eq(0).trigger('change');
$("#button").on("click", function() {
$('#select1 option').prop('selected', function() {
return this.defaultSelected;
});
$('#select1 option').prop('disabled',false) // remove the disabled attribut
$('#select2 option').prop('selected', function() {
return this.defaultSelected;
});
$('#select2 option').prop('disabled',false) // remove the disabled attribut
$('#select3 option').prop('selected', function() {
return this.defaultSelected;
});
$('#select3 option').prop('disabled',false) // remove the disabled attribut
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form>
<select name="option" id="select1" size="1" required>
<option value="" selected="selected" disabled hidden>Options</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<select name="option" id="select2" size="1" required>
<option value="" selected="selected" disabled hidden>Options</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<select name="option" id="select3" size="1" required>
<option value="" selected="selected" disabled hidden>Options</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<input align="middle" id="button" type="button" value="Reset Form">
</form>

how to preserve all select elements selected values in jquery

Can you help me to solve this problem.
The problem is this.
I have multiple select lists with same class name but different ids. If user select same option which is already selected in other select list then there should be an alert. and after alert the current select list which is clicked or changed should be restore to the previous value. for example we have 3 select boxes name as A1, A2, A3. Each one have same values for example 1,2,3,4. A1 selected value is 1, A2 selected value is 2 and A3 selected value is 3. Now if your want to change A1 value from 1 to 2 then there should be an alert like "Already selected". After this alert A1 list should be restored back to its original value which is 1. I tried the following code. In this code I can get already existing alert but the value of the last changes select box is changed to new one.
$(document).ready(function(){
var init = true;
if(init == true){
var a = new Array();
$(".brand-list").each(function(i, obj){
var current_obj_id = $(this).attr('id');
var current_obj_value = $('#'+ current_obj_id + " option:selected").val();
a[current_obj_id] = current_obj_value;
});
init = false;
}
$(".brand-list").change(function(){
a[$(this).attr('id')] = $('#'+ $(this).attr('id') + " option:selected").val();
var current_selected_obj_id = $(this).attr('id');
var current_selected_obj_value = $('#'+ $(this).attr('id') + " option:selected").val();
$(".brand-list").each(function(i, obj){
var current_obj_id = $(this).attr('id');
var current_obj_value = $('#'+ current_obj_id + " option:selected").val();
if(current_obj_id != current_selected_obj_id){
if(current_selected_obj_value == current_obj_value){
alert("current element global value: "+ a[current_selected_obj_id]);
$('#'+ current_selected_obj_id + " option[value=" + a[current_selected_obj_id] +"]").attr('selected','selected')
alert("already selected");
}
}else{
a[current_obj_id] = current_obj_value;
}
});
});
$( ".brand-list" ).focus(function() {
var current_selected_obj_id = $(this).attr('id');
var current_selected_obj_value = $('#'+ $(this).attr('id') + " option:selected").val();
a[current_selected_obj_id] = current_selected_obj_value;
console.log(a[current_selected_obj_id]);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<select id="inputBrand-1" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1" selected="selected">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="inputBrand-2" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1">1</option>
<option value="2" selected="selected">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="inputBrand-3" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3" selected="selected">3</option>
<option value="4">4</option>
</select>
Hopefully you can understand my question, because I'm not get to ask question which community members can understand easily. Thanks

You can save the previous value and check it then
$(document).ready(function(){
var init = true;
if(init == true){
var a = new Array();
$(".brand-list").each(function(i, obj){
var current_obj_id = $(this).attr('id');
var current_obj_value = $('#'+ current_obj_id + " option:selected").val();
a[current_obj_id] = current_obj_value;
});
init = false;
}
function hasConflict(input){
var conflict = false;
$(".brand-list").not(input).each(function(i, obj){
if($(this).val()==input.val()){
conflict = true;
return false; //break the loop
}
});
return conflict;
}
$(".brand-list").change(function(){
var $this = $(this); //recycle object
if(hasConflict($this)){
$this.val($this.data('prev'));
alert("Conflict"); //do whatever
}
});
$( ".brand-list" ).on('click focus',function() {
$(this).data('prev',$(this).val());
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<select id="inputBrand-1" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1" selected="selected">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="inputBrand-2" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1">1</option>
<option value="2" selected="selected">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="inputBrand-3" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3" selected="selected">3</option>
<option value="4">4</option>
</select>

Rather than annoy user by letting them select something and be told they can't it's better UX to either disable previous selections or remove them completely.
Here's an approach that manages the filtering/removing of other selections
var $selects = $(".brand-list"),
// store a cloned set of all options
$storedOptions = $selects.first().children().clone().removeAttr('selected'),
// whether to always include "SELECT A BRAND"
alwaysShowDefault = true;
$selects.change(function() {
// create array of all the selected values
var allValues = $selects.map(function() {
return $(this).val()
}).get();
// loop through each select to create filtered options
$selects.each(function(i) {
// new set of cloned and filtered options for this select instance
var $opts = $storedOptions.clone().filter(function() {
if(+this.value === -1){
return alwaysShowDefault || +allValues[i] === -1;
}
return allValues[i] === this.value || allValues.indexOf(this.value) === -1;
});
// update filtered options and reset current value
$(this).html($opts).val(allValues[i])
})
// trigger one change on page load to filter what is already selected
}).first().change();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<select id="inputBrand-1" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1" selected="selected">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="inputBrand-2" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1">1</option>
<option value="2" selected="selected">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="inputBrand-3" class="brand-list">
<option value="-1">SELECT A BRAND</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3" >3</option>
<option value="4">4</option>
</select>

Actually you'r currently doing is manually setting the selected attribute on each option element. It is not a good approach because it doesn't remove other attributes of options of the same select element. So use following code in your source.
$(e.currentTarget).val(-1);
Replace following code with above one
$('#'+ current_selected_obj_id + " option[value=" + a[current_selected_obj_id] +"]").attr('selected','selected')

How to Select Dropdown hidden option with Jquery Selector?

<select class="form-control" id="prodname" name="pname" >
<option value="0" disabled="disabled" selected="selected">-- Select Product --</option>
#{
foreach(var product in (List<tbleProdcutDetail>)ViewBag.productlist)
{
<option value="#product.Id">#product.Product_Name</option>
<option hidden>#product.Quantity</option>
}
}
</select>
I want to select this option.
<option hidden>#product.Quantity</option>
I have tried this selector but could not get text.
var productunitprice = $("#prodname option").find("hidden").text();

You can use var text = $("option:selected",this).next().text() Example below.
$("#prodname").change(function() {
var text = $("option:selected",this).next().text()
console.log(text)
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="prodname">
<option value="1">1</option>
<option hidden>1.1</option>
<option value="2">2</option>
<option hidden>2.2</option>
</select>

As an alternative to adding many unused and hidden options.
You can add the unit price to the relevant option directly using a data attribute for example data-unit-price.
foreach(var product in (List<tbleProdcutDetail>)ViewBag.productlist)
{
<option value="#product.Id" data-unit-price="#product.Quantity">#product.Product_Name</option>
}
Then simply read it from the selected option. In my humble opinion it is cleaner and doesn't use additional hidden option elements as storage for data belonging to other options.
$(document).ready(function() {
$("#prodname").change(function() {
var productunitprice = $("option:selected", this).data('unitPrice')
console.log(productunitprice)
})
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select class="form-control" id="prodname" name="pname">
<option value="1" data-unit-price="5.25">product 45</option>
<option value="2" data-unit-price="12.99">product 94</option>
</select>

Javascript disable select box on another select box option

I have two select dropdown lists:
<select name="internal_message">
<option value="yes">Yes</option>
<option value="" selected="selected">No</option>
</select>
and
<select name="internal_message_agent">
<option value="">Choose</option>.... etc
</select>
I have tried:
<select name="internal_message">
<option value="yes" onClick="document.getElementById('internal_message_agent').disabled=!this.selected;">Yes</option>
<option value="" selected="selected">No</option>
</select>
but it doesnt work - how can i get it working to disable the internal_message_agent select element to be disabled when the internal_message selected value is "No" and enable it when the selected option is "Yes"

Add an ID to each select and use jquery to disable it like so:
$('#box1').on('change', function(){
if($(this).val()==='no'){
$('#box2').attr('disabled', 'disabled');
}else{
$('#box2').attr('disabled', false);
}
});
http://jsfiddle.net/3MCaG/1/

Here's what it would look like with Javascript and HTML.
<!DOCTYPE html>
<html>
<head>
</head>
<script>
function validate(){
var b1 = document.getElementById("box1");
var f = b1.options[b1.selectedIndex].value;
var b2 = document.getElementById("box2");
if(f == "no"){
b2.disabled="disabled";
}
else{
b2.disabled="";
}
}
</script>
<select id="box1" onchange="validate()">
<option id="yes" value="yes">Yes</option>
<option id="no" value="no" selected="selected">No</option>
</select>
<select id="box2" disabled>
<option></option>
<option value="">Choose</option>
</select>
</html>

Jquery validate and a list of select box

How Can i specific require and unique condition for a list of select box like below?
<form name="signupForm" class="cmxform" id="signupForm" method="get" action="">
<select name="category[]" id="cat_1">
<option value="">Select One</option>
<option value="1">aa</option>
<option value="2">bb</option>
<option value="3">cc</option>
<option value="4">dd</option>
</select>
<select name="category[]" id="cat_2">
<option value="">Select One</option>
<option value="5">ee</option>
<option value="6">ff</option>
<option value="7">gg</option>
<option value="8">hh</option>
</select>
<select name="category[]" id="cat_3">
<option value="">Select One</option>
<option value="9">ii</option>
<option value="10">jj</option>
<option value="11">kk</option>
<option value="12">ll</option>
</select>
<input class="submit" type="submit" value="Submit">
</form>
Notice that there are the number of cat is not fixed, it can be more than 3,
so how to make it required for each selectbox,
and each selectbox chosen value must be unique using jquery validate plugin? Thank you

var $selects = $('form select[name^=category]'),
values = [];
$(':submit').click(function(e) {
e.preventDefault();
values = [];
$($selects).each(function() {
if($(this).val()) {
values.push($(this).val());
}
});
if(!values.length) {
alert('Please select all categories');
return false;
}
if(values.length < $selects.length || $.unique(values).length < $selects.length) {
alert('Please select all categories and be unique');
return false;
}
});
DEMO

Here is a great jQuery validation plugin that will make your life easier: http://www.position-absolute.com/articles/jquery-form-validator-because-form-validation-is-a-mess/
This is all you need to do: (the plugin does the rest)
<select id="sport" class="validate[required]" name="sport">
<option value="">--Select--</option>
<option value="option1">Tennis</option>
<option value="option2">Football</option>
<option value="option3">Golf</option>
</select>
Hope that helps :)