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Change text within Label to option from selection menu

This my custom select menu:
<select name="bankSelect" id="bankSelect" onchange="dispchange(this.form.bankSelect)">
<option>EQUIFAX</option>
<option value = 5 >EQUIFAX</option>
<option value = 6>TRANSUNION</option>
<option value = 7>EXPERIAN</option>
<option value = 8>BANK OF AMERICA</option>
<option value = 9>WELLS FARGO</option>
<option value = 10>CITIBANK</option>
<option value = 11>JPMORGAN</option>
<option value = 12>NAVIENT</option>
<option value = 13>CAPITAL ONE</option>
<option value = 14>U.S BANCORP</option>
</select>
This is my label:
<div class="info">
<label>Bank: </label>
<label id="bank">EQUIFAX</label><br>
</div>
I need to change the text within label with the ID='bank to the option i select from the menu i above.
So if i pick the option with value 9, then my label should change the text it's displaying by defualt,'EQUIFAX' to then display 'WELLS FARGO'.
This is what I've tried in my java-script based on googling similar questions:
function dispchange(bankSelect) {
var bsel_index = bankSelect.selectedIndex;
var bselin = bankSelect.options[bsel_index].value;
if(bselin == '6')
document.getElementById("bank").innerHTML = 'Transunion';
else if(opcao == '1')
document.getElementById('complemento').innerHTML = 'Titulo';
}
It does nothing. What am I doing wrong? Is there a better way / another way to change the label? Can I use something other than a label to display my choice from the selection menu? If so, how do I ensure is always displays the choice currently selected?

use option.text instead of option.value:
function dispchange() {
var el = document.getElementById('bankSelect');
document.getElementById('bank').innerHTML = el.options[el.selectedIndex].text;
}
<select name="bankSelect" id="bankSelect" onchange="dispchange()">
<option>EQUIFAX</option>
<option value="5">EQUIFAX</option>
<option value="6">TRANSUNION</option>
<option value="7">EXPERIAN</option>
<option value="8">BANK OF AMERICA</option>
<option value="9">WELLS FARGO</option>
<option value="10">CITIBANK</option>
<option value="11">JPMORGAN</option>
<option value="12">NAVIENT</option>
<option value="13">CAPITAL ONE</option>
<option value="14">U.S BANCORP</option>
</select>
<div class="info">
<label>Bank: </label>
<label id="bank">EQUIFAX</label><br>
</div>

function dispchange(bankSelect) {
console.log(document.getElementById("bankSelect").value)
document.getElementById('bank').innerHTML = document.getElementById("bankSelect").value;
}
<select name="bankSelect" id="bankSelect" onchange="dispchange()">
<option value="EQUIFAX">EQUIFAX</option>
<option value="TRANSUNION">TRANSUNION</option>
<option value ="EXPERIAN">EXPERIAN</option>
<option value= "BANK OF AMERICA">BANK OF AMERICA</option>
<option value ="WELLS FARGO">WELLS FARGO</option>
</select>
<div class="info">
<label>Bank: </label>
<label id="bank">EQUIFAX</label><br>
</div>
If you can change the value of the options from number to the Bank name then the following code is going to work as you need.
Otherwise, you have to create an array or object with the numbers and Bank names.
Is the above code work for you?

Alert message for different dropdown choices

I am trying to create a dropdown menu with options that bring up a different alert message for each option.
For example, a dropdown menu was created with the options "Algebra" "Chemistry" and "English 3". I want an alert "Geometry course required" to pop up for Algebra. "Biology course required" for Chemistry, and "English 1 and 2 courses required for English.
How do I do this? Thanks! I pretty much just need help with the function.
<select id="test-dropdown" onchange="choice1(this)">
<option value="1">Algebra</option>
<option value="2">Chemistry</option>
<option value="3">English 3</option>
</select>

Here is an example - I am not using alert but instead change a text on the page
I also moved the event handler definition to the script instead of inline
Note I also added a "Please select" since you cannot show the text for Algebra if it is already selected when loading
var choices = ["","Geometry course required","Biology course required","English 1 and 2 courses required"];
window.onload=function() {
document.getElementById("test-dropdown").onchange=function() {
document.getElementById("choice").innerHTML=choices[this.value];
}
document.getElementById("test-dropdown").onchange(); // show default
}
<select id="test-dropdown">
<option value="0">Please select</option>
<option value="1">Algebra</option>
<option value="2">Chemistry</option>
<option value="3">English 3</option>
</select>
<span id="choice"></span>
Without the Please select
var choices = ["","Geometry course required","Biology course required","English 1 and 2 courses required"];
window.onload=function() {
document.getElementById("test-dropdown").onchange=function() {
document.getElementById("choice").innerHTML=choices[this.value];
}
document.getElementById("test-dropdown").onchange(); // show default
}
<select id="test-dropdown">
<option value="1">Algebra</option>
<option value="2">Chemistry</option>
<option value="3">English 3</option>
</select>
<span id="choice"></span>
With alert
var choices = ["","Geometry course required","Biology course required","English 1 and 2 courses required"];
window.onload=function() {
document.getElementById("test-dropdown").onchange=function() {
if (this.value !== 0) alert(choices[this.value]);
}
}
<select id="test-dropdown">
<option value="0">Please select</option>
<option value="1">Algebra</option>
<option value="2">Chemistry</option>
<option value="3">English 3</option>
</select>
<span id="choice"></span>

var a = document.getElementById('test-dropdown');
a.addEventListener('change',function(){
var b = document.querySelectorAll('option:checked');
for(var i = 0; i < b.length; i++){
if(b[i].value == 1){
alert('Geometry course required')
}else if(b[i].value == 2 ){
alert('Biology course required')
}else{
alert('English 1 and 2 courses required for English')
}
}
});
<select id="test-dropdown">
<option value="0">select option</option>
<option value="1">Algebra</option>
<option value="2">Chemistry</option>
<option value="3">English 3</option>
</select>

Check this also in the [codepen] (https://codepen.io/scodek/pen/EboEQp),
function choice1(selected)
{
if(selected.options[selected.selectedIndex].text === "Algebra")
{
alert("Geometry course required");
}
else if(selected.options[selected.selectedIndex].text === "Chemistry")
{
alert("Biology course required");
}
else if(selected.options[selected.selectedIndex].text === "English 3")
{
alert("English 1 and 2 courses required for English");
}
}

Select Dropdown based on the partial value in dropdown value field

I have a scenario where i have to select the drop value based on querystring.
Query string could be likeq=c-1 q=c-2 q=p-5
and value in drop-down could be value="8-P-5" value="5-G-0" value="7-P-7"
How can i select the drop-down value based on query-string
Is it possible to do it from Code-behind C# or jquery is easy solution.
<select name="ctl00$ContentPlaceHolder1$ddlOptionGroup" id="ContentPlaceHolder1_ddlOptionGroup" class="form-control">
<option value="1-C-1">Item 1</option>
<option value="4-C-2">Item 2</option>
<option value="5-G-0">Item 3</option>
<option value="7-P-7">Item 4</option>
<option value="8-P-5">Item 5</option>
<option value="10-C-4">Item 6</option>
<option value="3-P-0">Item 7</option>
<option value="2-P-0">Item 8</option>
<option value="6-G-0">Item 9</option>
</select>
If query-string is q=c-2 then this should be selected <option value="4-C-2" selected>Item 2</option>

If you are open for a JavaScript/jQuery solution you can take the window.location.search and then use a jQuery selector to find the option based on a contains condition in a specific select tag.
Do note that this assumes the value that comes in your q is uniquely identifiable in a value property of your select element. In your current dataset q=p-0 will have both Item 7 AND Item 8 match. As you didn't provide a business rule for that case I left that here untouched.
Here is a snippet that demonstrate this:
// use window.location.search
var search = '?q=p-5'; // window.location.search;
// handle possible search for this value ?foo=bar&q=p-5#fragment
var parms = search.substr(1).split('&');
for(var i=0; i< parms.length;i++)
{
var keyValue= parms[i].split('=');
if (keyValue[0] === "q" && keyValue.length > 0) {
var value = keyValue[1].split('#');
$('select > option[value*="' + value[0].toUpperCase() + '"]').prop('selected',true);
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="ctl00$ContentPlaceHolder1$ddlOptionGroup" id="ContentPlaceHolder1_ddlOptionGroup" class="form-control">
<option value="1-C-1">Item 1</option>
<option value="4-C-2">Item 2</option>
<option value="5-G-0">Item 3</option>
<option value="7-P-7">Item 4</option>
<option value="8-P-5">Item 5</option>
<option value="10-C-4">Item 6</option>
<option value="3-P-0">Item 7</option>
<option value="2-P-0">Item 8</option>
<option value="6-G-0">Item 9</option>
</select>

for (int i = DropDownList1.Items.Count-1; i >0 ; i--)
{
if (DropDownList1.Items[i].Value.Contains("C-2"))
{
DropDownList1.Items[i].Selected = true;
break;
}
}
or you can do it by Linq syntax
DropDownList1.Items.Cast<ListItem>()
.Where(x => x.Value.Contains("C-2"))
.LastOrDefault().Selected = true;

multiple select boxes with same options - require unique selection

I have a form with 3 select boxes. Each select box has the same options. I want to require that you have to select a different option for each select box. For example, let's say the options are "cat", "dog" and "bird". If someone selects "bird" in the first select box, I want to disable or hide that option from the other two boxes. If they change their selection, then "bird" will be enabled or unhidden again.
<select id="box1">
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box2">
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box3">
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
I assume I can do this with jquery onchange but I'm not sure how to require the unique selection across different select boxes.
$('select').on('change', function() {
// If option is selected, disable it in all other select boxes. If option is deselected, reenable it in all other select boxes.
})
Thanks for your help!

1) Top To Bottom Priority Approach
The flow must be top to bottom. This also means when ever the user changes the dropdown value all the next dropdown's which come after it must be reset. Having said this, here is my code snippet.
HandleDropdowns($('#box1')); //initially call this function to handle the dropdowns by passing the first dropdown as parameter
$('select').on('change', function() {
HandleDropdowns($(this)); // handle all dropdowns on any change event.
});
function HandleDropdowns(element) {
var $element = element;
var value = $element.val();
$element.nextAll().val(''); //using nextAll lets reset all the following dropdowns
$element.nextAll().attr('disabled', 'disabled'); //disable all the following dropdowns.
HandleOptions(); // call this function to toggle the options
if (value.length) {
$element.next().removeAttr('disabled'); // only if this dropdown has some selection enable the next dropdown.
}
}
function HandleOptions() {
$('option').removeAttr('disabled'); //reset all the options to be available
$.each($('select'), function() { //loop from top to bottom and disable the options one by one.
var value = $(this).val();
if (value.length) {
$(this).nextAll().find('option[value="' + value + '"]').attr('disabled', 'disabled');
}
});
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="box1">
<option value="">Select</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box2">
<option value="">Select</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box3">
<option value="">Select</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
2) All Select Box With Same Priority Approach
In this approach when ever the user selects a value we check if any other dropdown has the same value, If yes reset it else do nothing. Below is a working sample.
$('select').on('change', function() {
HandleDropdowns($(this));
});
function HandleDropdowns(element) {
var $element = element;
var value = $element.val();
$.each($('select').not($element), function() { //loop all remaining select elements
var subValue = $(this).val();
if (subValue === value) { // if value is same reset
$(this).val('');
console.log('resetting ' + $(this).attr('id')); // demo purpose
}
});
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="box1">
<option value="">Select</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box2">
<option value="">Select</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box3">
<option value="">Select</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>

Try this
$('select').on('change', function () {
$("select").find("option").removeAttr("disabled");
$("select").not(this).find("option[value=" + $(this).val() + "]").attr("disabled", "disabled");
});

You can use onchange listener and evaluate the results simultaneously. Also add an reset button cause once three get selected, it becomes bottle neck case.
The working code is given below
function changeSelect(elements) {
var values = {};
elements.forEach(function(item){
values[item.id] = item.value;
});
elements.forEach(function(item){
for(var i = 0; i < item.children.length; i++) {
for(ids in values) {
if(item.id != ids && item.children[i].value == values[ids]) {
item.children[i].style.display = 'none';
}
}
}
});
}
function resetSelection(elements) {
elements.forEach(function(item){
item.value = '';
for(var i = 0; i < item.children.length; i++) {
item.children[i].style.display = '';
}
});
}
var box1 = document.getElementById('box1');
var box2 = document.getElementById('box2');
var box3 = document.getElementById('box3');
var boxArray = [box1, box2, box3];
boxArray.forEach(function(item){
item.addEventListener('change', changeSelect.bind(undefined,boxArray));
});
document.getElementById('reset').addEventListener('click', resetSelection.bind(undefined,boxArray));
<select id="box1">
<option value="">Select An Option</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box2">
<option value="">Select An Option</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<select id="box3">
<option value="">Select An Option</option>
<option value="cat">Cat</option>
<option value="dog">Dog</option>
<option value="bird">Bird</option>
</select>
<button id="reset">Reset</button>

Jquery disallow same value from multiple select lists

I need to make sure that when a value is selected in one of the lists, it cannot be selected in any of the others. Can this be done with jQuery, or do I need to create a validator that does not allow selection of the same value?
I have multiple select lists which are basically numbers only, i.e.
<select id="101_1">
<option value="0">0</option>
<option value="1"> 1</option>
<option value="2"> 2</option>
<option value="3"> 3</option>
<option value="4"> 4</option>
<option value="5"> 5</option>
<option value="6"> 6</option>
<option value="7"> 7</option>
....
<option value="50"> 50</option>
</select>
<select id="101_2">
<option value="0">0</option>
<option value="1"> 1</option>
<option value="2"> 2</option>
<option value="3"> 3</option>
<option value="4"> 4</option>
<option value="5"> 5</option>
<option value="6"> 6</option>
<option value="7"> 7</option>
....
<option value="50"> 50</option>
</select>
<select id="101_1">
<option value="0">0</option>
<option value="1"> 1</option>
<option value="2"> 2</option>
<option value="3"> 3</option>
<option value="4"> 4</option>
<option value="5"> 5</option>
<option value="6"> 6</option>
<option value="7"> 7</option>
....
<option value="50"> 50</option>
</select>

I have gotten the following code to work for one of my colleagues :
HTML :
<h3>List 1</h3>
<select id="select1">
<option value="null">-- select --</option>
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
</select>
<h3>List 2</h3>
<select id="select2">
<option value="null">-- select --</option>
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
</select>
<h3>List 3</h3>
<select id="select3">
<option value="null">-- select --</option>
<option value="A">A</option>
<option value="B">B</option>
<option value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
</select>
JS with jQuery :
$(document).ready(function() {
var selectState = {
'select1': 'null',
'select2': 'null',
'select3': 'null'
};
$('select').change(function() {
var selectId = $(this).attr('id');
var selectedOptionValue = $(this).val();
// for each other select element
$('select[id!="' + selectId + '"]').each(function(index) {
// enable the old option
$(this).find('option[value="' + selectState[selectId] + '"]').removeAttr('disabled');
if (selectedOptionValue !== 'null') { // if selected a real option
// disable the new option
$(this).find('option[value="' + selectedOptionValue + '"]').attr('disabled', 'disabled');
}
});
selectState[selectId] = selectedOptionValue; // update the new state at the end
});
});
And here is a CodePen

I opted to hide the option tag instead of remove as I suggested. Here is a complete working html file. I was going to post it on jsfiddle, but for some reason it wouldn't work. Be very aware of copy/paste errors in the .change handlers. Spent some time myself wondering why it wasn't working, but it was a copy/paste error.
Note that this code only works if every select tag has the same options. But, it works dynamically if you add or remove options later, while keeping them in sync as noted.
If you need it to work with lists with only some of the same options, you will be stuck dealing with having IDs on the options and then working the hiding/unhiding based on that instead of indexing into the children, but the basic mechanics are the same.
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.12.0.min.js"></script>
<style type="text/css">
.gone {display: none;}
</style>
<script type="text/javascript">
$(document).ready(function() {
// hides the option selected in the others
var hideValue = function(oldval, val, options, others) {
var unhideChild = -1;
var hideChild = -1;
// find which child to hide in the others
// also find the value we change from and unhide it
for (var i=1; i<options.length; i++) {
var optval = $(options[i]).val();
console.log(optval);
if (optval == val) {
hideChild = i;
}
if (optval == oldval) {
unhideChild = i;
}
}
if (unhideChild == -1 && oldval != "None") {
console.log("uh oh");
return;
}
if (hideChild == -1 && val != "None") {
console.log("uh oh");
return;
}
// hide them using the passed in selectors
for (var j=0; j<others.length; j++) {
if (oldval != "None") {
console.log("unhiding: " + others[j] + " v: " + unhideChild);
$($(others[j]).children()[unhideChild]).removeClass("gone");
}
if (val != "None") {
console.log("hiding: " + others[j] + " v: " + hideChild);
$($(others[j]).children()[hideChild]).addClass("gone");
}
}
}
// we need to keep track of the old values so we can unhide them if deselected
var val1 = "None";
var val2 = "None";
var val3 = "None"
$('#101_1').change(function() {
var opts = $('#101_1').children();
var v = $('#101_1').val();
hideValue(val1, v, opts, ["#101_2", "#101_3"]);
val1 = v;
});
$('#101_2').change(function() {
var opts = $('#101_2').children();
var v = $('#101_2').val();
hideValue(val2, v, opts, ["#101_1", "#101_3"]);
val2 = v;
});
$('#101_3').change(function() {
var opts = $('#101_3').children();
var v = $('#101_3').val();
hideValue(val3, v, opts, ["#101_2", "#101_1"]);
val3 = v;
});
});
</script>
</head>
<body>
<select value="None" id="101_1">
<option value="None">None</option>
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<select value="None" id="101_2">
<option value="None">None</option>
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<select value="None" id="101_3">
<option value="None">None</option>
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
</body>
</html>
Also, if you need the "None" value to not be there, remove it. Then just start the select ta 101_1 having 0 selected, 101_2 with 1 selected etc. Then make sure to trigger the change handler. Also, without the None option, the for loop needs to start with i=0.
So basically add this to the end of the script and make sure var i starts at 0 instead of 1.
$('#101_1').val('0');
$('#101_2').val('1');
$('#101_3').val('2');
$('#101_1').trigger('change');
$('#101_2').trigger('change');
$('#101_3').trigger('change');