I have a drop down menu, with two options:
<select name="chs" value="" id = ""/>
<option value="">ICE Cream</option>
<option value="">Juice</option>
</select>
This is what I want to have: in the first page you see a select, with two option, if you choose ICE cream another select will appear with different flavors (chocolate, vanilla, etc), and the same for juice.
This is what I already have:
html:
<label>Choose Skin</label><br /><select name="na" value="" id = ""/>
<option value="">ICE Cream</option>
<option value="">Juice</option>
</select>
<select name="icecreamfla" value="" onchange="showSelect()" id = "framework"/>
<option id="jm">vanilla</option>
<option id = "wp">chocholate</option>
</select>
<input type="submit" name = "redirect" value="go" />
The JavaScript:
function showSelect()
{
var select = document.getElementById('skin');
if(select.value == "juice"){
alert('saeed khare!');
}
else{
var option = document.getElementById('icecreamfla');
option.style.display = 'inline';
}
}
option.style.display used to be 'none', then I changed it to inline.
if any one can help please do it.
Here is a small demo with the flavours <select> only appearing when Ice Cream is selected.
It should be easy to follow to implement this to display a different <select> if the user chooses Juice.
Edit: If you want the selected value you can use types.options[types.selectedIndex].text to get it using the variables in my demo.
Is this you want to do it .
<script language='javascript'>
function showSelect()
{
var select = document.getElementById('skin').value;
if(select == "ICE Cream"){
var str="<select name='icecreamfla' value='' id = 'icecreamfla'/>"
+"<option id='jm'>vanilla</option>"+
"<option id ='wp'>chocholate</option> </select>";
document.getElementById("flavour").innerHTML=str;
}
}
<label>Choose Skin</label><br /><select name="na" value="" id = "skin" onchange="showSelect()">
<option value="ICE Cream">ICE Cream</option>
<option value="Juice">Juice</option>
</select>
<div id="flavour"></div>
<input type="submit" name = "redirect" value="go" />
Related
Here is my script, what my goal is if other is selected in select, the other text input beside it will be enabled, this is what i've got so far, any approach will be really appreciated, I have 4 questions like this and I want it to be modular, best approach for doing my function to be reuseable.. How do I properly do this without any problem posting my data as 2 name inputs will generate 2 post variables in php.. T_T
<script type="text/javascript" charset="utf-8">
function validate()
{
var ddl = document.getElementById("cause_pain");
var selectedValue = ddl.options[ddl.selectedIndex].value;
if (selectedValue == "OTHER")
{
document.getElementsByClassName("causepain")[0].removeAttribute("name");
document.getElementsByClassName("causepain1")[0].removeAttribute("disabled");
}
}
</script>
<form action="test.php" method="GET">
<select class="select causepain" id="cause_pain" name="cause_pain" onchange="validate()">
<option value="" selected="selected">Select Cause of Pain</option>
<option value="ARTHRITIS">ARTHRITIS</option>
<option value="RHEUMATISM">RHEUMATISM</option>
<option value="OLD AGE">OLD AGE</option>
<option value="ACTIVE LIFESTYLE WHEN YOUNGER">ACTIVE LIFESTYLE WHEN YOUNGER</option>
<option value="OTHER">OTHER</option>
</select>
<input class="causepain1" type="text" id="cause_pain" name="cause_pain" size="40" onkeyup="clean('this.id')" disabled>
<input type="submit" id="submit"/>
</form>
This method is reusable and pretty straight forward. Using data attributes, you could specify the element that needs to be shown on the specific option element. Also before showing any input element hide the elements that were attributed to the previous selection.
Example:
<form action="test.php" method="GET">
<select class="select causepain" id="cause_pain" name="cause_pain">
<option value="" selected="selected">Select Cause of Pain</option>
<option value="ARTHRITIS">ARTHRITIS</option>
<option value="RHEUMATISM">RHEUMATISM</option>
<option value="OLD AGE">OLD AGE</option>
<option value="ACTIVE LIFESTYLE WHEN YOUNGER">ACTIVE LIFESTYLE WHEN YOUNGER</option>
<option value="OTHER" data-show="cause_pain_other">OTHER</option>
</select>
<input class="causepain1" type="text" id="cause_pain_other" name="cause_pain" size="40"
onkeyup="clean('this.id')" disabled style="display: none;">
<input type="submit" id="submit"/>
</form>
<script type="text/javascript" charset="utf-8">
var selectedOpt;
function selectionChanged(e) {
if (selectedOpt && selectedOpt.dataset.show) {
var showEl = document.getElementById(selectedOpt.dataset.show);
showEl.disabled = true;
showEl.style.display = 'none';
}
selectedOpt = this.querySelector('[value="'+e.target.value+'"]');
if (selectedOpt.dataset.show) {
var showEl = document.getElementById(selectedOpt.dataset.show);
showEl.disabled = false;
showEl.style.display = 'block';
}
}
document.querySelector('select').addEventListener('change', selectionChanged);
</script>
Your selectedOpt should be an object if you're using multiple selects on the same page and then just add the element to the object with the id as an index:
var selectedOpt = {};
...
selectedOpt[this.id] = this.querySelector('[value="'+e.target.value+'"]');
I am very new to javascript. So i have a select option and an input field. What i want to achieve is to have the value of the input field change when i select a particular option. This is what i have tried:
First Name: <input type="text" value="colors">
<select name="">
<option>Choose Database Type</option>
<option onclick="myFunction(g)>green</option>
<option onclick="myFunction(r)>red</option>
<option onclick="myFunction(o)>orange</option>
<option onclick="myFunction(b)>black</option>
</select>
<script>
function myFunction(g) {
document.getElementById("myText").value = "green";
}
function myFunction(r) {
document.getElementById("myText").value = "red";
}
function myFunction(o) {
document.getElementById("myText").value = "orange";
}
function myFunction(b) {
document.getElementById("myText").value = "black";
}
</script>
A few things:
You should use the onchange function, rather than onclick on each individual option.
Use a value attribute on each option to store the data, and use an instance of this to assign the change (or event.target)
You have no ID on your text field
You're missing the end quote for your onclick function
<select name="" onchange="myFunction(event)">
<option disabled selected>Choose Database Type</option>
<option value="Green">green</option>
<option value="Red">red</option>
<option value="Orange">orange</option>
<option value="Black">black</option>
</select>
And the function:
function myFunction(e) {
document.getElementById("myText").value = e.target.value
}
And add the ID
<input id="myText" type="text" value="colors">
Fiddle: https://jsfiddle.net/gasjv4hs/
More proper way is to put your JS code in a different .js file and use Jquery as when you go further with your programming this is the proper way.
Your HTML
<input type="text" id="color" name="color">
<select name="" id="changeData">
<option>Choose Database Type</option>
<option data-value="green">green</option>
<option data-value="red">red</option>
<option data-value="orange">orange</option>
<option data-value="black">black</option>
</select>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
</script>
Your JS
$(document).ready(function () {
$('#changeData').change(function(){
var color = $(this).val();
$('#color').val(color);
})
});
Also make sure that you have added Jquery Library to your Project. You can either download Jquery and add in your project folder OR also you can use CDN. in this example CDN is used.
I came up with a similar problem. In my case i was trying to change the minimum value of an input based on the value of an option in a select list. I tried to apply the above solutions but nothing worked. So i came with this, which can be applied to problems similar to this
HTML
<input id="colors" type="text" value="">
<select id="select-colors" name="" onchange="myFunction()">
<option disabled selected>Choose Colour</option>
<option value="green">green</option>
<option value="red">red</option>
<option value="orange">orange</option>
<option value="black">black</option>
</select>
JS
function myFunction() {
var x = document.getElementById("select-colors").value;
document.getElementById("colors").value = x;
}
This works by getting the value of the select with id "select-colors" on every change, assigning it into a variable "x" and inserting it into the input value with id "colors". This can be implemented in anyway based on your problem
You create functions with same name multiple times.
Only last one will work.
the variables you pass g,r,o,b are undefined.
Don't add onclick to option add onchange to select.
Make use of HTML5 data-* attribute
function myFunction(element) {
document.getElementById("myText").value = element;
}
First Name: <input type="text" id="myText" value="colors">
<select name="" onchange="myFunction(this.value);">
<option>Choose Database Type</option>
<option data-value="green">green</option>
<option data-value="red">red</option>
<option data-value="orange">orange</option>
<option data-value="black">black</option>
</select>
You can resolve it this way.
` First Name:
<select name="" onchange="myFunction()" id="selectID">
<option>Choose Database Type</option>
<option >green</option>
<option >red</option>
<option >orange</option>
<option >black</option>
</select>
<script>
function myFunction() {
var selectItem = document.getElementByID('selectID').value;
document.getElementByID('yourId').value = sekectItem;
}
</script>
Here's a way to achieve that:
var select = document.getElementById('colorName');
function myFunction(event) {
var color = 'No color selected';
if (select.selectedIndex > 0) {
color = select.item(select.selectedIndex).textContent;
}
document.getElementById('myText').value = color;
}
select.addEventListener('click', myFunction);
myFunction();
First Name: <input type="text" id="myText">
<select id="colorName">
<option>Choose Database Type</option>
<option>green</option>
<option>red</option>
<option>orange</option>
<option>black</option>
</select>
Your code should be like following.
<input type="text" name="color" id="color">
<select name="" id="change_color">
<option>Choose Database Type</option>
<option >green</option>
<option >red</option>
<option >orange</option>
<option >black</option>
</select>
<script type="text/javascript" src="jquery.js"></script>
<script>
$(document).ready(function () {
$('#change_color').change(function(){
var color = ($(this).val());
$('#color').val(color);
})
});
</script>
Here is JS Code that worked for me
var selectYear = document.getElementById('select-year');
selectYear.addEventListener('change', function() {
var selectedYear = document.getElementById('selected-year');
selectedYear.innerHTML = selectYear.value;
});
Select Input ID: select-year
Text ID: selected-year
Code generated from Codex AI :)
In my registration page, I'm gonna use two drop-down select that one of them should be hidden if its Negative and if its positive new drop-down will open to choose ...
In mysql table I've table as diabetes name with enom
enum('negative', 'insulin', 'drug', 'ndm', 'mody', '')
Here's my code:
<div><label for="diabetes">Diabetes:</label>
<select id="diabetes" name="diabetes">
<option value="negative">Negative</option>
<option value="">Positive</option>
</select>
</div>
<div><label for="diabetestype">Diabetes Type:</label>
<select id="diabetestype" name="diabetestype">
<option value="insulin">Insulin</option>
<option value="drug">Drug</option>
<option value="ndm">NDM</option>
<option value="mody">MODY</option>
</select>
</div>
For example: If Diabetes is negative value is negative as default then Diabetes Type is hidden
and
If Diabetes is positive then Diabetes type will be appeared to choose items.
those values like insulin, drug, mdm, mody should be inserted into this:
value="positive"
How can I make it through java script?
I can't add class or div or span. Is it possible just through JavaScript using ??
Thank you so much
Use jquery, it is comparatively easier.
$(document).ready(function(){
$("#diabetestype").hide();
$("#diabetes").on("change", function(){
var v = $(this).val();
if(v=="positive"){
$("#diabetestype").show();
}else{
$("#diabetestype").hide();
}
});
});
To make this code workable, you need to add value of Positive option also. So instead value="" change it to value="positive".
You can even hide the label also:
$(document).ready(function(){
$("#diabetestype").closest("div").hide();
$("#diabetes").on("change", function(){
var v = $(this).val();
if(v=="positive"){
$("#diabetestype").closest("div").show();
}else{
$("#diabetestype").closest("div").hide();
}
});
});
<div><label for="diabetes">Diabetes:</label>
<select id="diabet" name="diabet" onchange="checkDiabet();">
<option value="negative">Negative</option>
<option value="positive" id="isDiabet">Positive</option>
</select>
</div>
<div id="type" style="display: hidden;">
<label for="diabetestype">Diabetes Type:</label>
<select id="diabetestype" name="diabetestype">
<option value="insulin">Insulin</option>
<option value="drug">Drug</option>
<option value="ndm">NDM</option>
<option value="mody">MODY</option>
</select>
</div>
<script>
function checkDiabet() {
var isDiabet = document.getElementById("isDiabet").selected;
if (isDiabet == true) { document.getElementById("type").removeAttribute("style"); }
else { document.getElementById("type").style.display = "none"; }
}
</script>
First, set the first select to fire the function checkDiabet() by the attribute onchange. Then give the option an id, which needs to be checked, so you can access it easily.
Then, set the second select to display: none This could be done in a CSS header or file, or like in this case inline. (div style=""), also add an id to access it easily. (div id="type")
Now comes the function checkDiabete(). It checks if the select is selected (can be true or false (bool)). Is selected => show (div id="type"), if not, hide this div (and all of it's contents)
(if is already hidden, it then overwrites the (style="display: none;") with (style="display: none;))
That's it! :)
Try this:
function SelectDiabetes() {
var d = document.getElementById("diabetes").value;
var dType = document.getElementById("diabetestypebox");
if(d == "negative")
dType.style.display = "none";
else
dType.style.display = "block";
}
SelectDiabetes();
<div><label for="diabetes">Diabetes:</label>
<select id="diabetes" name="diabetes" onchange="SelectDiabetes(this.value);">
<option value="negative">Negative</option>
<option value="positive">Positive</option>
</select>
</div>
<div id="diabetestypebox"><label for="diabetestype">Diabetes Type:</label>
<select id="diabetestype" name="diabetestype">
<option value="insulin">Insulin</option>
<option value="drug">Drug</option>
<option value="ndm">NDM</option>
<option value="mody">MODY</option>
</select>
</div>
Call a js function onchange of select id diabetes
<div><label for="diabetes">Diabetes:</label>
<select id="diabetes" name="diabetes" onchange="toggleTypes()">
<option value="negative">Negative</option>
<option value="">Positive</option>
</select>
</div>
<div><label for="diabetestype">Diabetes Type:</label>
<select id="diabetestype" style="display:none" name="diabetestype">
<option value="insulin">Insulin</option>
<option value="drug">Drug</option>
<option value="ndm">NDM</option>
<option value="mody">MODY</option>
</select>
</div>
Use the following javascript
function toggleTypes(){
var el=document.getElementById('diabetes');
var medElem=document.getElementById('diabetestype');
if(el.value=='positive') {
medElem.style.display='block';
} else {
medElem.style.display='none';
}
}
I want a drop down element where user can select from available options or select enter value option which in turn allows to enter value.
I specifically want that user can enter value only when they select "Enter a value " option.
Here is what I have tried so far.
HTML-
<div class="ginput_container">
<select name="input_4" id="input_1_4" class="medium gfield_select" tabindex="15">
<option value="0">None</option>
<option value="155">1-70</option>
<option value="185">71-250</option>
<option value="*">Enter value</option>
</select>
<input type="text" value="None" class="holder" >
</div>
JavaScript-
jQuery(".gfield_select").change(function() {
var val = jQuery(this).val();
var enter = jQuery(this).parent().find('option:selected').text();
var x = jQuery(this).parent();
if (enter ==="Enter a value" || enter === "Enter value"){
var holder = x.find('.holder');
holder.val('');
holder.prop('disabled',false);
holder.focus();
} else {
x.find('.holder').val(x.find('option:selected').text());
}
});
JS fiddle
however it wont work properly if i click the enter value option again.
I think there are many plugins that do what you want but if you want to create your own, it's a basic and simple solution.
You can create a select and a textbox with display:none like this:
<select id="ddlDropDownList">
<option value="1">Item 1</option>
<option value="2">Item 2</option>
<option value="3">Item 3</option>
<option value="-1">Enter Value</option>
</select>
<input id="txtTextBox" type="text" />
<style>
#txtTextBox{
display:none;
}
</style>
then try this JQuery:
$("#ddlDropDownList").change(function(){
if($(this).val() == '-1'){
$("#txtTextBox").fadeIn();
}else{
$("#txtTextBox").fadeOut();
}
});
Check JSFiddle Demo
I have forked your JSFiddle to http://jsfiddle.net/pwdst/4ymtmf7b/1/ which I hope does what you wanted to achieve.
HTML-
<div class="ginput_container">
<label for="input_1_4">Select option</label>
<select class="medium gfield_select" id="input_1_4" name="input_4" tabindex="15">
<option value="0">None</option>
<option value="155">1-70</option>
<option value="185">71-250</option>
<option value="*">Enter value</option>
</select>
<div>
<label class="hidden-label" for="input_1_4_other">Other value</label>
<input class="holder" id="input_1_4_other" disabled="disabled" name="input_1_4_other" placeholder="None" type="text" />
</div>
</div>
JavaScript-
jQuery(".gfield_select").change(function() {
var $this = jQuery(this);
var val = $this.val();
var holder = $this.parent().find('.holder');
if (val === "*"){
holder.val('');
holder.removeAttr('disabled');
holder.focus();
} else {
holder.val(this.options[this.selectedIndex].text);
holder.attr('disabled', 'disabled');
}
});
When the "Enter value" option is chosen then the input box is enabled, value set to an empty string, and it is focused. If another option is chosen then the text input is disabled again, and the text value from the select list is used.
Thanks guys
I guess i have found my answer
HTML-
<div class="ginput_container">
<select name="input_4" id="input_1_4" class="medium gfield_select" tabindex="15">
<option value="0">None</option>
<option value="155">1-70</option>
<option value="185">71-250</option>
<option value="*">Enter value</option>
</select>
<input type="text" value="None" class="holder" >
</div>
JavaScript-
jQuery(".gfield_select").change(function() {
var val = jQuery(this).val();
var enter = jQuery(this).parent().find('option:selected').text();
var x = jQuery(this).parent();
if (enter ==="Enter a value" || enter === "Enter value"){
var holder = x.find('.holder');
holder.val('');
holder.prop('disabled',false);
holder.focus();
jQuery(this).val("0"); // Change select value to None.
} else {
x.find('.holder').val(x.find('option:selected').text());
x.find('.holder').prop('disabled',true);
}
});
JS FIDDLE
This works, does anyone see anything I shouldn't be doing?
My function that is called
function getWeight(){
var weight;
var quantity = document.dhform.quantity.value;
var cardSize = document.dhform.cardSize.value;
weight = quantity * cardSize;
document.rates.weight.value = weight;
}
takes values from these drop down menues
<td><span class="style29">Quantity</span><span class="style1"><br/>
<select id="Quantity" name="quantity" size="1">
<option value="250">250</option>
<option value="500">500</option>
<option value="1000" selected>1000</option>
<option value="1500">1500</option>
<option value="2000">2000</option>
<option value="2500">2500</option>
<option value="3000">3000</option>
<option value="4000">4000</option>
<option value="5000">5000</option>
</select>
</span></td>
<td><p><span class="style1"><span class="style29">Size</span><br/>
<select id="Size" name="Size" size="1" onChange="getWeight()">
<option value="0.00999" selected>8.5 x 3.5</option>
<option value="0.0146">11 x 4</option>
</select>
</span></p></td>
Value needs to be inserted into this text box
<td style="width: 115px; height: 49px;"><span class="style16">Weight</span><br/>
<input type="text" id="weight" name="weight" size="10" maxlength="4"/>
</td>
Yes, it's done with Javascript. Let's say the "choose something" part is a drop-down (an HTML select box). You add an "onchange" event handler to that select box which fires a javascript function (which will automatically get the changed select box element as a parameter). Within that function, you use the value of the select box to determine what you want the value of the other box to be, and you update that other box's value.
Example:
<head>
<script language="JavaScript">
function setToy(dropDown) {
var pet = dropDown.options[dropDown.selectedIndex].value);
var newBox = document.getElementById("toy");
var toyText = "";
switch(pet) {
case "dog": toyText = "bone";
case "cat": toyText = "mouse";
default:toyText = "";
}
newBox.innerHTML = toyText;
}
</script></head>
<body>
<select name="petDropDown" onChange="updateToy(this)">
<option value="dog">Dog</option>
<option value="cat">Cat</option>
</select><br />
Preferred Toy: <input id="toy" />
</body>
I'll add that if you do this stuff a lot, you should look into jQuery, which makes this kind of thing much easier.