I am trying to recreate a "linked" drop down menu by using someone else's code but extend it to link not just 2 but 3. Now my code is working but I am facing 2 problems all to do with the final link!
the final "3rd" drop down (organiser) displays the same organisers doesn't matter which "state" and/or "store" were chosen
the final "3rd" drop down (organiser) doesn't reset to "select the organiser" when new "State" and or "store were picked. The second one "store" does when new "state" is picked.
Thank you for your advice!
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js"></script>
</head>
<body>
<style type="text/css">
.subcat option {
display: none;
}
.subcat option.label {
display: inline;
}
</style>
<script>
function goToNewPage()
{
var url = document.getElementById('organiser').value;
console.log(url);
if(url != 'none') {
window.location = url;
}
}
</script>
<script type="text/javascript">
$(function(){
var $cat = $("#state"),
$subcat = $(".subcat");
$organiser = $(".organiser");
$cat.on("change",function(){
var _rel = $(this).val();
$subcat.find("option").attr("style","");
$subcat.val("");
if(!_rel) return $subcat.prop("disabled",true);
$subcat.find("[rel="+_rel+"]").show();
$subcat.prop("disabled",false);
});
$subcat.on("change",function(){
var _org = $(this).val();
$organiser.find("option").attr("style","");
$organiser.val("");
if(!_org) return $organiser.prop("disabled",true);
$organiser.find("[org="+_org+"]").show();
$organiser.prop("disabled",false); });
});
</script>
<form id="formname" name="Sate-Store">
<select name="state" id="state">
<option value="">Select state</option>
<option value="ma">MA</option>
<option value="me">ME</option>
<option value="nh">NH</option>
</select>
<select disabled="disabled" class="subcat" id="store" name="store">
<option value>Select a store</option>
<!-- MA -->
<option rel="ma" value="ma_store_1">MA Store 1</option>
<option rel="ma" value="http://www.google.com">MA Store 2</option>
<option rel="ma" value="ma_store_3">MA Store 3</option>
<option rel="ma" value="ma_store_4">MA Store 4</option>
<option rel="ma" value="ma_store_5">MA Store 5</option>
<!-- ME -->
<option rel="me" value="me_store_1">ME Store 1</option>
<option rel="me" value="me_store_2">ME Store 2</option>
<option rel="me" value="me_store_3">ME Store 3</option>
<option rel="me" value="me_store_4">ME Store 4</option>
<option rel="me" value="me_store_5">ME Store 5</option>
<!-- MH -->
<option rel="nh" value="nh_store_1">NH Store 1</option>
<option rel="nh" value="nh_store_2">NH Store 2</option>
<option rel="nh" value="nh_store_3">NH Store 3</option>
<option rel="nh" value="nh_store_4">NH Store 4</option>
<option rel="nh" value="nh_store_5">NH Store 5</option>
</select>
<select disabled="disabled" class="organiser" id="organiser" name="organiser">
<option value>Select the organiser</option>
<!-- MA -->
<option org="ma_store_1" value="https://test.com/">Jack</option>
<option org="ma_store_1" value="James">James</option>
<option org="ma_store_1" value="Frank">Frank</option>
</select>
<input type=button value="Go" onclick="goToNewPage()" />
</form>
</body>
</html>
Tried Jfiddle and the code still have the same problem.
I have a button that pass the value of input box to my select. The problem is when the value of my input box are didn't have in my select it show empty. But I want to show OTHERS if it's empty or shows the given value and put asterisk, e.g. POTATO* .
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<input type="text" name="fruitname" id="fruitname" placeholder="Fruit Name"></input>
<button name="findfruit" id="findfruit" onclick="findfruit()">Find Fruit in Select</button>
<select name="fruitcontainer" id="fruitcontainer">
<option value="Apple">Apple</option>
<option value="Banana">Banana</option>
<option value="Coconut">Coconut</option>
<option value="Durian">Durian</option>
<option value="Others">Others</option>
</select>
</body>
</html>
<script type="text/javascript">
function findfruit(){
document.getElementById('fruitcontainer').value = document.getElementById('fruitname').value;
}
</script>
Test if the text input one of the possible values of the <select>.
function findfruit() {
var value = document.getElementById('fruitname').value;
if (value == '') {
value = "Others";
} else if (!document.querySelector("#fruitcontainer option[value='" + value + "']")) {
value += '*';
var newOption = document.createElement('option');
newOption.value = value;
newOption.textContent = value;
document.getElementById('fruitcontainer').appendChild(newOption);
}
document.getElementById('fruitcontainer').value = value;
}
<input type="text" name="fruitname" id="fruitname" placeholder="Fruit Name"></input>
<button name="findfruit" id="findfruit" onclick="findfruit()">Find Fruit in Select</button>
<select name="fruitcontainer" id="fruitcontainer">
<option value="Apple">Apple</option>
<option value="Banana">Banana</option>
<option value="Coconut">Coconut</option>
<option value="Durian">Durian</option>
<option value="Others">Others</option>
</select>
I basically want to limit my choices in my form so that when a car is chosen as well as the transmission only certain colors may appear. I have created the form. The problem is creating the code in the Javascript file. I don't know how to make it so that if Car 1 is chosen as well as Automatic then for example only Black and blue appear as options. Im relatively new to coding and any help would be appreciated.
Thanks
HTML
<script src="Script\configurator.js" type="text/javascript"></script>
<form name="CarConfigurator">
<select name="Car_make" onchange="Transmission(this.value);">
<option value=" " selected="selected">None</option>
<option value="1">Audi RS6</option>
<option value="2">BMW M4</option>
<option value="3">Mercedes C63 AMG</option>
</select>
<br>
<br>
<select name="A_M" >
<option value="" selected="selected">None</option>
<option value="1" selected="selected">Automatic</option>
<option value="2" selected="selected">Manual</option>
</select>
<br>
<br>
<select name="Color">
<option value="" selected="selected">None</option>
<option value="1">Black</option>
<option value="2">Blue</option>
<option value="3">Red</option>
<option value="4">White</option>
<option value="5">Green</option>
</select>
</form>
Javascript
function Transmission(Car) {
var make = document.CarConfigurator.A_M;
make.options.length = 0;
if (Car == "1") {
make.options[make.options.length] = new Option('Automatic','1');
make.options[make.options.length] = new Option ('Manual','2');
}
if (Car =="2" ) {
make.options[make.options.length] = new Option('Manual','2');
}
if (Car == "3") {
make.options[make.options.length] = new Option('Automatic','3');
}
}
Is this what you want:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<form name="CarConfigurator">
<select name="Car_make" onchange="Transmission();">
<option value=" " selected="selected">None</option>
<option value="1">Audi RS6</option>
<option value="2">BMW M4</option>
<option value="3">Mercedes C63 AMG</option>
</select>
<br>
<br>
<select name="A_M" onchange="Transmission();">
<option value="" selected="selected">None</option>
<option value="1" selected="selected">Automatic</option>
<option value="2" selected="selected">Manual</option>
</select>
<br>
<br>
<select name="Color" onchange="ChoicesMade();">
<option value="" selected="selected">None</option>
<option value="1">Black</option>
<option value="2">Blue</option>
<option value="3">Red</option>
<option value="4">White</option>
<option value="5">Green</option>
</select>
<div id="imageContainer" style="display: none;"><img src="http://buyersguide.caranddriver.com/media/assets/submodel/6873.jpg" /></div>
</form>
<script type="text/javascript">
function Transmission() {
var Car = document.CarConfigurator.Car_make.value;
var make = document.CarConfigurator.A_M.value;
var color = document.CarConfigurator.Color;
color.options.length = 0;
if (Car == "1" && make == '1') {
color.options.add(new Option('Black', '1'));
color.options.add(new Option('Blue', '2'));
}
else if(Car == '2' && make == '1')
{
color.options.add(new Option('Red', '3'));
color.options.add(new Option('White', '4'));
}
ChoicesMade();
}
function ChoicesMade()
{
var form = document.CarConfigurator;
var car = form.Car_make.value;
var make = form.A_M.value;
var color = form.Color.value;
if(car != ' ' && make != '' && color != '')
{
var imageContainer = document.querySelector('#imageContainer');
imageContainer.style.display = 'block';
}
}
</script>
</body>
</html>
You can use objects in JavaScript and then loop through each array in object to change options. For example
var cars = {
"Audi_RS6":{
"name":"Audi RS6",
"Automatic":["color_1","color_2"],
"Manual":["color_1","color_2"]
},
"BMW_M4":{
"name":"BMW M4",
"Manual":["color_1","color_2"]
},
"Mercedes_C63_AMG":{
"name":"Mercedes C63 AMG",
"Automatic":["color_1","color_2"]
}
};
values can be accessed like this
var result = cars.Audi_RS6.Manual[1];
Here you go Duncher, this code does exactly what you want
<!DOCTYPE html>
<html><head>
<title></title>
</head>
<body>
<form name="CarConfigurator">
<select id="car" name="Car_make">
<option value="" selected="selected">Which car?</option>
<option value="car1">Audi RS6</option>
<option value="car2">BMW M4</option>
<option value="car3">Mercedes C63 AMG</option>
</select>
<br>
<br>
<select id="trans" name="A_M">
<option value="" selected="selected">What trans?</option>
<option value="auto">Automatic</option>
<option value="man">Manual</option>
</select>
<br>
<br>
<select id="color" name="Color">
<option value="" selected="selected">What Color?</option>
<option value="black">Black</option>
<option value="blue">Blue</option>
<option value="red">Red</option>
<option value="white">White</option>
<option value="green">Green</option>
</select>
</form>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js">
</script>
<script src="configurator.js"></script>
</body>
</html>
And the JavaScript:
$("#car").change(function () {
transmission();
});
$("#trans").change(function () {
transmission();
});
function transmission() {
if ($("#car").val() == "car1" && $("#trans").val() == "auto") {
$("option[value$='red']").hide();
$("option[value$='white']").hide();
$("option[value$='green']").hide();
} else {
$("option[value$='red']").show();
$("option[value$='white']").show();
$("option[value$='green']").show();
}
}
You will have to make a few tweaks to get your other car & trans combinations working how you want them to (i.e. displaying only the colors you want) by adding more if else statements in the transmission() method but this should get you on your way. This is using jQuery by the way.
Screen shot
I have what is a stupidly simply drop down list, when a selection is made it appends the value seen in the below list to the URL to do a sort, while this works I am missing a piece of the puzzle as it does not retain the selection. The onchange forces a refresh of the page, while the value is still passed into the URL and remains to the user it may still be apparent that they have not made a selection. So I am looking at perhaps using Jquery as a function in the onchange rather than a redirect that is being used now, but I have no idea where to start as I am pretty new to this...
<select id="Selection" class="sorter" onchange="location=this.options[[this.selectedIndex]].value" style="float:right;margin-right:8px;">
<option value="">Sort by</option>
<option value="?orderby=0">Code</option>
<option value="?orderby=1">Title A-Z</option>
<option value="?orderby=2">Title Z-A</option>
<option value="?orderby=3">Brand</option>
<option value="?orderby=4">Lowest price</option>
<option value="?orderby=5">Highest price</option>
<option value="?orderby=6">Lowest Quantity</option>
<option value="?orderby=7">Highest Quantity</option>
</select>
Any help would be hugely appreciated...
This is ans. to ur Question.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
(function($) {
$.QueryString = (function(a) {
if (a == "") return {};
var b = {};
for (var i = 0; i < a.length; ++i)
{
var p=a[i].split('=');
if (p.length != 2) continue;
b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
}
return b;
})(window.location.search.substr(1).split('&'))
})(jQuery);
var qstr=$.QueryString["orderby"];
alert(qstr);
//$("#Selection").prop("selectedIndex", qstr);
</script>
<select id="Selection" class="sorter" onchange="location=this.options[[this.selectedIndex]].value" style="float:right;margin-right:8px;">
<option id=1 value="">Sort by</option>
<option id=2 value="?orderby=1">Code</option>
<option id=3 value="?orderby=2">Title A-Z</option>
<option id=4 value="?orderby=3">Title Z-A</option>
<option id=5 value="?orderby=4">Brand</option>
<option id=6 value="?orderby=5">Lowest price</option>
<option id=7 value="?orderby=6">Highest price</option>
<option id=8 value="?orderby=7">Lowest Quantity</option>
<option id=9 value="?orderby=8">Highest Quantity</option>
</select>
<script>$("#Selection").prop("selectedIndex", qstr);
</script>
</body>
</html>
How to use onClick() or onSelect() with option tag? Below is my code in which I tried to implement that, but it is not working as expected.
Note: where listCustomer domain object list getting in JSP page.
<td align="right">
<select name="singleSelect" ">
<c:forEach var="Customer" items="${listCustomer}" >
<option value="" onClick="javascript:onSelect(this);> <c:out value="${Customer}" /></option>
</c:forEach>
</select>
</td>
How do I modify it to detect that an option is selected?
Neither the onSelect() nor onClick() events are supported by the <option> tag. The former refers to selecting text (i.e. by clicking + dragging across a text field) so can only be used with the <text> and <textarea> tags. The onClick() event can be used with <select> tags - however, you probably are looking for functionality where it would be best to use the onChange() event, not onClick().
Furthermore, by the look of your <c:...> tags, you are also trying to use JSP syntax in a plain HTML document. That's just... incorrect.
In response to your comment to this answer - I can barely understand it. However, it sounds like what you want to do is get the value of the <option> tag that the user has just selected whenever they select one. In that case, you want to have something like:
<html>
<head>
<script type="text/javascript">
function changeFunc() {
var selectBox = document.getElementById("selectBox");
var selectedValue = selectBox.options[selectBox.selectedIndex].value;
alert(selectedValue);
}
</script>
</head>
<body>
<select id="selectBox" onchange="changeFunc();">
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>
Even more simplified: You can pass the value attribute directly!
<html>
<head>
<script type="text/javascript">
function changeFunc(i) {
alert(i);
}
</script>
</head>
<body>
<select id="selectBox" onchange="changeFunc(value);">
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>
The alert will either return 1 or 2.
The answer you gave above works but it is confusing because you have used two names twice and you have an unnecessary line of code. you are doing a process that is not necessary.
it's a good idea when debugging code to get pen and paper and draw little boxes to represent memory spaces (i.e variables being stored) and then to draw arrows to indicate when a variable goes into a little box and when it comes out, if it gets overwritten or is a copy made etc.
if you do this with the code below you will see that
var selectBox = document.getElementById("selectBox");
gets put in a box and stays there you don't do anything with it afterwards.
and
var selectBox = document.getElementById("selectBox");
is hard to debug and is confusing when you have a select id of selectBox for the options list . ---- which selectBox do you want to manipulate / query / etc is it the local var selectBox that will disappear or is it the selectBox id you have assigned to the select tag
your code works until you add to it or modify it then you can easily loose track and get all mixed up
<html>
<head>
<script type="text/javascript">
function changeFunc() {
var selectBox = document.getElementById("selectBox");
var selectedValue = selectBox.options[selectBox.selectedIndex].value;
alert(selectedValue);
}
</script>
</head>
<body>
<select id="selectBox" onchange="changeFunc();">
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>
a leaner way that works also is:
<html>
<head>
<script type="text/javascript">
function changeFunc() {
var selectedValue = selectBox.options[selectBox.selectedIndex].value;
alert(selectedValue);
}
</script>
</head>
<body>
<select id="selectBox" onchange="changeFunc();">
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>
and it's a good idea to use descriptive names that match the program and task you are working on am currently writing a similar program to accept and process postcodes using your code and modifying it with descriptive names the object is to make computer language as close to natural language as possible.
<script type="text/javascript">
function Mapit(){
var actualPostcode=getPostcodes.options[getPostcodes.selectedIndex].value;
alert(actualPostcode);
// alert is for debugging only next we go on to process and do something
// in this developing program it will placing markers on a map
}
</script>
<select id="getPostcodes" onchange="Mapit();">
<option>London North Inner</option>
<option>N1</option>
<option>London North Outer</option>
<option>N2</option>
<option>N3</option>
<option>N4</option>
// a lot more options follow
// with text in options to divide into areas and nothing will happen
// if visitor clicks on the text function Mapit() will ignore
// all clicks on the divider text inserted into option boxes
</select>
in this example de select tag is named as: aula_clase_cb
<select class="form-control" id="aula_clase_cb" >
</select>
document.getElementById("aula_clase_cb").onchange = function(e){
id = document.getElementById('aula_clase_cb').value;
alert("id: "+id);
};
<div class="form-group">
<script type="text/javascript">
function activa(){
if(v==0)
document.formulario.vr_negativo.disabled = true;
else if(v==1)
document.formulario.vr_negativo.disabled = true;
else if(v==2)
document.formulario.vr_negativo.disabled = true;
else if(v==3)
document.formulario.vr_negativo.disabled = true;
else if(v==4)
document.formulario.vr_negativo.disabled = true;
else if(v==5)
document.formulario.vr_negativo.disabled = true;
else if(v==6)
document.formulario.vr_negativo.disabled = false;}
</script>
<label>¿Qué tipo de vehículo está buscando?</label>
<form name="formulario" id="formulario">
<select name="lista" id="lista" onclick="activa(this.value)">
<option value="0">Vehiculo para la familia</option>
<option value="1">Vehiculo para el trabajo</option>
<option value="2">Camioneta Familiar</option>
<option value="3">Camioneta de Carga</option>
<option value="4">Vehiculo servicio Publico</option>
<option value="5">Vehiculo servicio Privado</option>
<option value="6">Otro</option>
</select>
<br />
<input type="text" id="form vr_negativo" class="form-control input-xlarge" name="vr_negativo"/>
</form>
</div>
You can change selection in the function
window.onload = function () {
var selectBox = document.getElementById("selectBox");
selectBox.addEventListener('change', changeFunc);
function changeFunc() {
alert(this.value);
}
}
<!DOCTYPE html>
<html>
<head>
<title>Selection</title>
</head>
<body>
<select id="selectBox" onChange="changeFunc();">
<option> select</option>
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>
<html>
<head>
<title>Cars</title>
</head>
<body >
<h1>Cars</h1>
<p>Name </p>
<select id="selectBox" onchange="myFunction(value);">
<option value="volvo" >Volvo</option>
<option value="saab" >Saab</option>
<option value="mercedes">Mercedes</option>
</select>
<p id="result"> Price : </p>
<script>
function myFunction($value)
{
if($value=="volvo")
{document.getElementById("result").innerHTML = "30L";}
else if($value=="saab")
{document.getElementById("result").innerHTML = "40L";}
else if($value=="mercedes")
{document.getElementById("result").innerHTML = "50L";}
}
</script>
</body>
</html>```
Other option, for similar example but with anidated selects, think that you have two select, the name of the first is "ea_pub_dest" and the name of the second is "ea_pub_dest_2", ok, now take the event click of the first and display the second.
<script>
function test()
{
value = document.getElementById("ea_pub_dest").value;
if ( valor == "value_1" )
document.getElementById("ea_pub_dest_nivel").style.display = "block";
}
</script>
Change onClick() from with onChange() in the . You can send the option value to a javascript function.
<select id="selector" onChange="doSomething(document.getElementById(this).options[document.getElementById(this).selectedIndex].value);">
<option value="option1"> Option1 </option>
<option value="option2"> Option2 </option>
<option value="optionN"> OptionN </option>
</select>
If you need to change the value of another field, you can use this:
<input type="hidden" id="mainvalue" name="mainvalue" value="0">
<select onChange="document.getElementById('mainvalue').value = this.value;">
<option value="0">option 1</option>
<option value="1">option 2</option>
</select>
example dom onchange usage:
<select name="app_id" onchange="onAppSelection(this);">
<option name="1" value="1">space.ecoins.beta.v3</option>
<option name="2" value="2">fun.rotator.beta.v1</option>
<option name="3" value="3">fun.impactor.beta.v1</option>
<option name="4" value="4">fun.colorotator.beta.v1</option>
<option name="5" value="5">fun.rotator.v1</option>
<option name="6" value="6">fun.impactor.v1</option>
<option name="7" value="7">fun.colorotator.v1</option>
<option name="8" value="8">fun.deluxetor.v1</option>
<option name="9" value="9">fun.winterotator.v1</option>
<option name="10" value="10">fun.eastertor.v1</option>
<option name="11" value="11">info.locatizator.v3</option>
<option name="12" value="12">market.apks.ecoins.v2</option>
<option name="13" value="13">fun.ecoins.v1b</option>
<option name="14" value="14">place.sin.v2b</option>
<option name="15" value="15">cool.poczta.v1b</option>
<option name="16" value="16" id="app_id" selected="">systems.ecoins.launch.v1b</option>
<option name="17" value="17">fun.eastertor.v2</option>
<option name="18" value="18">space.ecoins.v4b</option>
<option name="19" value="19">services.devcode.v1b</option>
<option name="20" value="20">space.bonoloto.v1b</option>
<option name="21" value="21">software.devcode.vpnfree.uk.v1</option>
<option name="22" value="22">software.devcode.smsfree.v1b</option>
<option name="23" value="23">services.devcode.smsfree.v1b</option>
<option name="24" value="24">services.devcode.smsfree.v1</option>
<option name="25" value="25">software.devcode.smsfree.v1</option>
<option name="26" value="26">software.devcode.vpnfree.v1b</option>
<option name="27" value="27">software.devcode.vpnfree.v1</option>
<option name="28" value="28">software.devcode.locatizator.v1</option>
<option name="29" value="29">software.devcode.netinfo.v1b</option>
<option name="-1" value="-1">none</option>
</select>
<script type="text/javascript">
function onAppSelection(selectBox) {
// clear selection
for(var i=0;i<=selectBox.length;i++) {
var selectedNode = selectBox.options[i];
if(selectedNode!=null) {
selectedNode.removeAttribute("id");
selectedNode.removeAttribute("selected");
}
}
// assign id and selected
var selectedNode = selectBox.options[selectBox.selectedIndex];
if(selectedNode!=null) {
selectedNode.setAttribute("id","app_id");
selectedNode.setAttribute("selected","");
}
}
</script>
In my case:
<html>
<head>
<script type="text/javascript">
function changeFunction(val) {
//Show option value
console.log(val.value);
}
</script>
</head>
<body>
<select id="selectBox" onchange="changeFunction(this)">
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>
focus clears value, so select any value is a change and fires myFunc(this) and blur defocus for reselect
<html>
<head>
<script type="text/javascript">
function myFunc(el) {
//Show option value
console.log(el.value);
}
</script>
</head>
<body>
<select id="selectBox" onchange="myFunc(this);this.blur();" onfocus="this.selectedIndex = -1;">
<option value="1">Option #1</option>
<option value="2">Option #2</option>
</select>
</body>
</html>