Develop Reference

Populated Select with html + JS

I have this Fiddle : https://jsfiddle.net/Ardee12/tL643rjq/3/
My problem is, I always get the same options at the third select from second select (vice versa), after I select an option from the first one. I need to stick for their own option (second and third select), but still have the populated function from their "rel" attribute. Can anyone please help me?
$(document).ready(function () {
$(".mainSelect").change(function() {
if ($(this).data('options') === undefined) {
$(this).data('options', $('.kidSelect option').clone());
}
var rel = this.options[this.selectedIndex].getAttribute('rel');
var options = $(this).data('options').filter('[rel=' + rel + ']');
$('.kidSelect').html(options);
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<select class="mainSelect">
<option rel="1">Fruit</option>
<option rel="2">Animal</option>
<option rel="3">Bird</option>
<option rel="4">Car</option>
</select>
<select class="kidSelect">
<option rel="1">Banana</option>
<option rel="1">Apple</option>
<option rel="1">Orange</option>
<option rel="2">Wolf</option>
<option rel="2">Fox</option>
<option rel="2">Bear</option>
<option rel="3">Eagle</option>
<option rel="3">Hawk</option>
<option rel="4">BWM</option>
</select>
<select class="kidSelect">
<option rel="1">AAAAA</option>
<option rel="2">BBBBB</option>
<option rel="3">CCCCC</option>
</select>

You need to treat each of the kidSelect individually. Loop through each of them at the beginning and store a clone of their own options in each instance.
Then when you change main select, filter each set separately
// store a clone of each kidSelect options on page load
$('.kidSelect').each(function() {
$(this).data('options', $(this).children().clone());
});
$(".mainSelect").change(function() {
var rel = this.options[this.selectedIndex].getAttribute('rel');
// filter each kids options and set in place
$('.kidSelect').html(function() {
return $(this).data('options').filter('[rel=' + rel + ']').clone();
});
// trigger the change on page load also to do initial filtering
}).change();
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<select class="mainSelect">
<option rel="1">Fruit</option>
<option rel="2">Animal</option>
<option rel="3">Bird</option>
<option rel="4">Car</option>
</select>
<select class="kidSelect">
<option rel="1">Banana</option>
<option rel="1">Apple</option>
<option rel="1">Orange</option>
<option rel="2">Wolf</option>
<option rel="2">Fox</option>
<option rel="2">Bear</option>
<option rel="3">Eagle</option>
<option rel="3">Hawk</option>
<option rel="4">BWM</option>
</select>
<select class="kidSelect">
<option rel="1">AAAAA</option>
<option rel="2">BBBBB</option>
<option rel="3">CCCCC</option>
</select>

I'm not entirely sure what you're trying to do but here is a guess.
I think you only want to effect the second select with the changes. For that you need to adjust your selector. It currently selects both selects.
$(document).ready(function () {
$(".mainSelect").change(function() {
if ($(this).data('options') === undefined) {
$(this).data('options', $('.js-kidSelect option').clone());
}
var rel = this.options[this.selectedIndex].getAttribute('rel');
var options = $(this).data('options').filter('[rel=' + rel + ']');
$('.js-kidSelect').html(options);
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<select class="mainSelect">
<option rel="1">Fruit</option>
<option rel="2">Animal</option>
<option rel="3">Bird</option>
<option rel="4">Car</option>
</select>
<select class="kidSelect js-kidSelect">
<option rel="1">Banana</option>
<option rel="1">Apple</option>
<option rel="1">Orange</option>
<option rel="2">Wolf</option>
<option rel="2">Fox</option>
<option rel="2">Bear</option>
<option rel="3">Eagle</option>
<option rel="3">Hawk</option>
<option rel="4">BWM</option>
</select>
<select class="kidSelect">
<option rel="1">AAAAA</option>
<option rel="2">BBBBB</option>
<option rel="3">CCCCC</option>
</select>

HTML select dropdownlist how to display the VALUE/ID instead of text

So this is the HTML code:
<select id='selUser' style='width: 200px;'>
<option value='0'>Select User</option>
<option value='1'>Yogesh singh</option>
<option value='2'>Sonarika Bhadoria</option>
<option value='3'>Anil Singh</option>
<option value='4'>Vishal Sahu</option>
<option value='5'>Mayank Patidar</option>
<option value='6'>Vijay Mourya</option>
<option value='7'>Rakesh sahu</option>
</select>
What I want to achieve is that, when I click on Value '1', the dropdownlist will display "1" instead of Yogesh Singh. Is it possible to do that?

This will display the value instead of the name when you select an option. I also wrote some code to put the name back if you change it again otherwise the number would just stay there added both examples:
var oldIndex = ''
var oldText = ''
function change(x) {
if (oldIndex != '' && oldText != '') {
x.options[oldIndex].innerHTML = oldText
}
oldIndex = x.value
oldText = x.options[x.selectedIndex].innerHTML
x.options[x.selectedIndex].innerHTML = x.value
}
function change2(x) {
x.options[x.selectedIndex].innerHTML = x.value
}
<select onchange="change(this)" id='selUser' style='width: 200px;'>
<option value='0'>Select User</option>
<option value='1'>Yogesh singh</option>
<option value='2'>Sonarika Bhadoria</option>
<option value='3'>Anil Singh</option>
<option value='4'>Vishal Sahu</option>
<option value='5'>Mayank Patidar</option>
<option value='6'>Vijay Mourya</option>
<option value='7'>Rakesh sahu</option>
</select>
<select onchange="change2(this)" id='selUser2' style='width: 200px;'>
<option value='0'>Select User</option>
<option value='1'>Yogesh singh</option>
<option value='2'>Sonarika Bhadoria</option>
<option value='3'>Anil Singh</option>
<option value='4'>Vishal Sahu</option>
<option value='5'>Mayank Patidar</option>
<option value='6'>Vijay Mourya</option>
<option value='7'>Rakesh sahu</option>
</select>

This script would do it:
document.body.onload = function(){
sel = document.getElementById('selUser');
opts = sel.childNodes;
for(var i in opts){
opts[i].innerHTML = opts[i].value;
}
}

Solution using jQuery:
var last_user_selected_name;
$(document).on('change', '#selUser', function() {
$('#selUser option:not(:selected)').each(function() {
if ($(this).text() === $(this).val()) {
$(this).text(last_user_selected_name);
}
});
var user_seleted = $('#selUser option:selected');
if (user_seleted.val() != 0) {
last_user_selected_name = user_seleted.text();
user_seleted.text(user_seleted.val());
console.log("User selected >> " + last_user_selected_name +
" >> " + user_seleted.val());
}
});
<script src='https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js'></script>
<select id='selUser' style='width: 200px;'>
<option value='0'>Select User</option>
<option value='1'>Yogesh singh</option>
<option value='2'>Sonarika Bhadoria</option>
<option value='3'>Anil Singh</option>
<option value='4'>Vishal Sahu</option>
<option value='5'>Mayank Patidar</option>
<option value='6'>Vijay Mourya</option>
<option value='7'>Rakesh sahu</option>
</select>

How to use Jquery to change the third select box when the first select box is changed or triggered?

Hi i would like to know how to use jQuery to change the third select box (#school) when ever the first select box on change event is triggered.
When select box 1 is selected, select box should change and select box three should also automatically change to reflect the options that correspond to what is in select box two.
$("#certificate").change(function() {
if ($(this).data('options') == undefined) {
$(this).data('options', $('#program option').clone());
}
var id = $(this).val();
var options = $(this).data('options').filter('[class=' + id + ']');
$('#program').html(options).show();
});
$("#program").change(function() {
if ($(this).data('options') == undefined) {
$(this).data('options', $('#school option').clone());
}
var id = $(this).val();
var options = $(this).data('options').filter('[class=' + id + ']');
$('#school').html(options).show();
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="select1" id="certificate">
<option value="">Select Country</option>
<option value="india">India</option>
<option value="america">America</option>
</select>
<select name="select2" id="program" >
<option value="">Select State</option>
<option class="india" value="orissa">Orissa</option>
<option class="india" value="telangan">Telangan</option>
<option class="america" value="america">USA</option>
<option class="america" value="america">California</option>
</select>
<select name="select3" id="school" >
<option value="">Select city</option>
<option class="orissa">Nal</option>
<option class="orissa">Mir</option>
<option class="telangan">Hyd</option>
<option class="telangan">Vija</option>
<option class="america">KRK</option>
<option class="america">MRK</option>
</select>

Disable 3th, 4th dropdown list if 1st or 2nr are selected

I have this issue: In my form there are 4 dropdownlist and when the 1st (category1) or 2nd (software1) dropdown list is selected, the 3th (category2) and 4th (software2) must be disabled.
For this issue I find this script at disable-second-dropdown-if-the-first-is-not-selected but I do not trust to modify this:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
category1
<select name='cat1'>
<option value='0'>Select one</option>
<option value='1'>little</option>
<option value='2'>good</option>
</select>
software1
<select name='soft1'>
<option value=''>Select one</option>
<option value='W'>Word</option>
<option value='E'>Excel</option>
<option value='PP'>Power Point</option>
</select>
<br />
category2
<select name='cat2'>
<option value='0'>Select one</option>
<option value='1'>little</option>
<option value='2'>good</option>
</select>
software2
<select name='soft2'>
<option value=''>Select one</option>
<option value='W'>Word</option>
<option value='E'>Excel</option>
<option value='PP'>Power Point</option>
</select>
<script type="text/javascript">
var setEnabled = function(e) {
var name = this.name.replace(/1/, '2'); //get name for second drop down
$('select[name=' + name + ']')
.prop('disabled', 0 === this.selectedIndex) // disable if selected option is first one
};
$(function() {
$('select[name=cat1], select[name=soft1]')
.on('change', setEnabled)
.trigger('change'); // trigger on page load
});
</script>
How to modify this?
Thanks

I think the main thing you want is to flip === for !==
However, to get this working on a matrix, where both top inputs trigger enabling/disabling of both bottom inputs, you'll need to test both on change of either.
var setEnabled = function(e) {
var selected = $('select[name=cat1]').prop('selectedIndex') > 0 || $('select[name=soft1]').prop('selectedIndex') > 0;
$('select[name=cat2], select[name=soft2]').prop('disabled', selected); // disable if selected option is first one
if (selected) {
$('select[name=cat2], select[name=soft2]').prop('selectedIndex', 0)
}
};
$(function() {
$('select[name=cat1], select[name=soft1]')
.on('change', setEnabled)
.trigger('change'); // trigger on page load
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
</script>
category1
<select name='cat1'>
<option value='0'>Select one</option>
<option value='1'>little</option>
<option value='2'>good</option>
</select>
software1
<select name='soft1'>
<option value=''>Select one</option>
<option value='W'>Word</option>
<option value='E'>Excel</option>
<option value='PP'>Power Point</option>
</select>
<br />
category2
<select name='cat2'>
<option value='0'>Select one</option>
<option value='1'>little</option>
<option value='2'>good</option>
</select>
software2
<select name='soft2'>
<option value=''>Select one</option>
<option value='W'>Word</option>
<option value='E'>Excel</option>
<option value='PP'>Power Point</option>
</select>

jQuery remove SELECT options based on another SELECT selected (Need support for all browsers)

Say I have this dropdown:
<select id="theOptions1">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
I want it so that when the user selects 1, this is the thing that the user can choose for dropdown 2:
<select id="theOptions2">
<option value="a">a</option>
<option value="b">b</option>
<option value="c">c</option>
</select>
Or if the user selects 2:
<select id="theOptions2">
<option value="a">a</option>
<option value="b">b</option>
</select>
Or if the user selects 3:
<select id="theOptions2">
<option value="b">b</option>
<option value="c">c</option>
</select>
I tried the code posted here:
jQuery disable SELECT options based on Radio selected (Need support for all browsers)
But it doesn't work for selects.
Please help!
Thank you!
UPDATE:
I really like the answer Paolo Bergantino had on:
jQuery disable SELECT options based on Radio selected (Need support for all browsers)
Is there anyway to modify this to work with selects instead of radio buttons?
jQuery.fn.filterOn = function(radio, values) {
return this.each(function() {
var select = this;
var options = [];
$(select).find('option').each(function() {
options.push({value: $(this).val(), text: $(this).text()});
});
$(select).data('options', options);
$(radio).click(function() {
var options = $(select).empty().data('options');
var haystack = values[$(this).attr('id')];
$.each(options, function(i) {
var option = options[i];
if($.inArray(option.value, haystack) !== -1) {
$(select).append(
$('<option>').text(option.text).val(option.value)
);
}
});
});
});
};

This works (tested in Safari 4.0.1, FF 3.0.13):
$(document).ready(function() {
//copy the second select, so we can easily reset it
var selectClone = $('#theOptions2').clone();
$('#theOptions1').change(function() {
var val = parseInt($(this).val());
//reset the second select on each change
$('#theOptions2').html(selectClone.html())
switch(val) {
//if 2 is selected remove C
case 2 : $('#theOptions2').find('option:contains(c)').remove();break;
//if 3 is selected remove A
case 3 : $('#theOptions2').find('option:contains(a)').remove();break;
}
});
});
And the beautiful UI:
<select id="theOptions1">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<br />
<select id="theOptions2">
<option value="a">a</option>
<option value="b">b</option>
<option value="c">c</option>
</select>

You can add classes to your <option>s to store which go with each value of #theOptions1:
<select id="theOptions2">
<option value="a" class="option-1 option-2">a</option>
<option value="b" class="option-1 option-2 option-3">b</option>
<option value="c" class="option-1 option-3">c</option>
</select>
then do this:
$(function() {
var allOptions = $('#theOptions2 option').clone();
$('#theOptions1').change(function() {
var val = $(this).val();
$('#theOptions2').html(allOptions.filter('.option-' + val));
});
});

For the record you can NOT remove options in a select list in Internet Explorer.

try this. this will definitely work
$(document).ready(function () {
var oldValue;
var oldText;
var className = '.ddl';
$(className)
.focus(function () {
oldValue = this.value;
oldText = $(this).find('option:selected').text();
})
.change(function () {
var newSelectedValue = $(this).val();
if (newSelectedValue != "") {
$('.ddl').not(this).find('option[value="' + newSelectedValue + '"]').remove();
}
if ($(className).not(this).find('option[value="' + oldValue + '"]').length == 0) { // NOT EXIST
$(className).not(this).append('<option value=' + oldValue + '>' + oldText + '</option>');
}
$(this).blur();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script>
<form action="/Home/Ex2" method="post">
<select class="ddl" id="A1" name="A1">
<option value="">Select</option>
<option value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
<hr />
<select class="ddl" id="A2" name="A2">
<option value="">Select</option>
<option value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
<hr />
<select class="ddl" id="A3" name="A3">
<option value="">Select</option>
<option value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
<hr />
<select class="ddl" id="A4" name="A4">
<option value="">Select</option>
<option value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
<hr />
<input type="submit" name="submit" value="Save Data" id="btnSubmit" />
</form>

Actually, using the code below will remove a dropdown option just fine in IE, as long as it is not the selected option (it will not work on "a" without deselecting that option first):
var dropDownField = $('#theOptions2');
dropDownField.children('option:contains("b")').remove();
You just run this to remove whatever option you want to remove under a conditional statement with the first group (theOptions1) - that if one of those is selected, you run these lines:
var dropDownField = $('#theOptions2');
if ($('#theOptions1').val() == "2") {
dropDownField.children('option:contains("c")').remove();
}
if ($('#theOptions1').val() == "3") {
$("#theOptions2 :selected").removeAttr("selected");
$('#theOptions2').val('b');
dropDownField.children('option:contains("a")').remove();
}
-Tom