Readonly listbox in html without disabling [duplicate] - html

This question already has answers here:
HTML form readonly SELECT tag/input
(46 answers)
Closed 8 years ago.
Please refer this link
Demo
Please help me to make this listbox readonly. Please do not use disable attribute as I need to post it later.
<select size=4 multiple="multiple">
<option selected=selected>Volvo</option>
<option selected=selected>Saab</option>
<option selected=selected>Mercedes</option>
<option selected=selected>Audi</option>
</select>

Why don't you keep this disabled and add a <input type="hidden"> with the information you need to be posted?
Obviously this wasn't very clear so:
<script>
var selectVal = $("#select_user > option[selected]").val();
$("#select_post").val(selectVal);
</script>
<select disabled id="select_user">
<option>Option 1</option>
<option selected>Option 2</option>
<option>Option 3</option>
</select>
<input type="hidden" name="select_post" id="select_post">
Now the user can see the select, but the value is replicated in the hidden input and then sent to the action file. Thankfully, since the select never changes, you don't have to do anything with .change()

There is no readonly attribute available for the element and disabling the field was not an option since we needed the value on the serverside. Some simple javascript did the job:
You can try this script
<select size=4 multiple="multiple" onchange="this.selectedIndex = 1">
<option selected="selected">Volvo</option>
<option selected="selected">Saab</option>
<option selected="selected">Mercedes</option>
<option selected="selected">Audi</option>
</select>
This will only do the job if you meant that the user should be able to see all values in the list and not be able to select a new value.
Demo

As far as I know, readonly doesn't exist for select boxes.
As for best practice, if you don't need the data to be changed, you shouldn't make it a form element. If you only make it a form element in order to get a certain display, use CSS to make it LOOK like a form element.
Plus, if data shouldn't be changed, it's safer not to send it with a form. Javascript can be disabled easily.
CSS
ul.fake_select{
list-style-type:none;
color:#000000;
overflow-y:scroll;
width:100px;
height:auto; /* If you have lots of options, put a fixed value */
padding:0;
}
ul.fake_select li{
margin:0;
background:#3399FF;
color:#FFFFFF;
}
HTML
<ul class="fake_select">
<li>Volvo</li>
<li>Saab</li>
<li>Mercedes</li>
<li>Audo</li>
</ul>

<select size=4 multiple="multiple" onchange="this.selectedIndex=this.defaultIndex;">
<option selected="selected">Volvo</option>
<option selected="selected" >Saab</option>
<option selected="selected" >Mercedes</option>
<option selected="selected" >Audi</option>
</select>
Demo :-
http://jsfiddle.net/2gmKY/2/

Related

select option width auto increases [duplicate]

This question already has answers here:
How to expand 'select' option width after the user wants to select an option
(13 answers)
Closed 2 years ago.
.option100{
width:100px !important;
}
<select id="fieldOfInterestSelect" name="fieldOfInterest" class="form-control" required="">
<option value="-1">SELECT ONE</option>
<option value="4893" class="option100">Actual(R)rrrrrrrrrrrrrrrr</option>
<option value="4891" class="option100">Customerrrrrrrrrrrrrr</option>
<option value="4892" class="option100">Daterrrrrrr</option>
<option value="4894" class="option100">Forecast(R)RRRRRR</option>
</select>
My concern is , if the length of text in option is larger than its container's length (option), then it should be automatically converted (fit) into multiple lines to fit the container's width.
This may not be what you want, but you can get two lines per option, by using the "optgroup" tag
<select>
<optgroup label="Option 1">
<option value="yes">Option 1 new Line</option>
</optgroup>
<optgroup label="Option 2">
<option value="no">Option 2 new line</option>
</optgroup>
</select>
You can find more details about this topic from this link
enter link description here
your answere is here check this fiddle, use selectBoxIt plugin for it.
And let me know it will helps you or not!
You cannot break a select option. Instead you could provide a tooltip to the options to show lengthy options.
<!DOCTYPE html>
<html>
<head>
<style>
.option100 {
width: 100px !important;
}
</style>
</head>
<body>
<select id="fieldOfInterestSelect" name="fieldOfInterest" class="form-control option100" required="">
<option value="-1">SELECT ONE</option>
<option title="This is my lengthy explanation of what this selection really means, so since you only see 1 on the drop down list you really know that you're opting to elect me as King of Willywarts! Always be sure to read the fine print!" value="4893" class="option100">Actual(R)rrrrrrrrrrrrrrrr</option>
<option title="This is my lengthy explanation of what this selection really means, so since you only see 1 on the drop down list you really know that you're opting to elect me as King of Willywarts! Always be sure to read the fine print!" value="4891" class="option100">Customerrrrrrrrrrrrrr</option>
<option title="This is my lengthy explanation of what this selection really means, so since you only see 1 on the drop down list you really know that you're opting to elect me as King of Willywarts! Always be sure to read the fine print!" value="4892" class="option100">Daterrrrrrr</option>
<option title="This is my lengthy explanation of what this selection really means, so since you only see 1 on the drop down list you really know that you're opting to elect me as King of Willywarts! Always be sure to read the fine print!" value="4894" class="option100">Forecast(R)RRRRRR</option>
</select>
</body>
</html>
Try the following code
Html
<select id="resizing_select" name="fieldOfInterest" class="form-control" required="">
<option value="-1">SELECT ONE</option>
<option value="4893" class="option100">Actual(R)rrrrrrrrrrrrrrrr</option>
<option value="4891" class="option100">Customerrrrrrrrrrrrrr</option>
<option value="4892" class="option100">Daterrrrrrr</option>
<option value="4894" class="option100">Forecast(R)RRRRRR</option>
</select>
<select id="width_tmp_select">
<option id="width_tmp_option"></option>
</select>
Jquery
$(document).ready(function() {
$('#resizing_select').change(function(){
$("#width_tmp_option").html($('#resizing_select option:selected').text());
$(this).width($("#width_tmp_select").width());
});
});
CSS
#resizing_select {
width: 107px;
}
#width_tmp_select{
display : none;
}
Here is the working jsfiddle:http://jsfiddle.net/FSsG8/623/
I think it should helps you,.

On OSX a <select> element always has first option checked by default [duplicate]

I have a very weird requirement, wherein I am required to have no option selected by default in drop down menu in HTML. However,
I cannot use this,
<select>
<option></option>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
Because, for this I will have to do validation to handle the first option. Can anyone help me in achieving this target without actually including the first option as part of the select tag?
Maybe this will be helpful
<select>
<option disabled selected value> -- select an option -- </option>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
-- select an option -- Will be displayed by default. But if you choose an option, you will not be able to select it back.
You can also hide it using by adding an empty option
<option style="display:none">
so it won't show up in the list anymore.
Option 2
If you don't want to write CSS and expect the same behaviour of the solution above, just use:
<option hidden disabled selected value> -- select an option -- </option>
You could use Javascript to achieve this. Try the following code:
HTML
<select id="myDropdown">
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
JS
document.getElementById("myDropdown").selectedIndex = -1;
or JQuery
$("#myDropdown").prop("selectedIndex", -1);
Today (2015-02-25)
This is valid HTML5 and sends a blank (not a space) to the server:
<option label=" "></option>
Verified validity on http://validator.w3.org/check
Verified behavior with Win7(IE11 IE10 IE9 IE8 FF35 Safari5.1) Ubuntu14.10(Chrome40, FF35) OSX_Yosemite(Safari8, Chrome40) Android(Samsung-Galaxy-S5)
The following also passes validation today, but passes some sort of space character to the server from most browsers (probably not desirable) and a blank on others (Chrome40/Linux passes a blank):
<option> </option>
Previously (2013-08-02)
According to my notes, the non-breaking-space entity inside the option tags shown above produced the following error in 2013:
Error: W3C Markup Validaton Service (Public): The first child option
element of a select element with a required attribute and without a
multiple attribute, and whose size is 1, must have either an empty
value attribute, or must have no text content.
At that time, a regular space was valid XHTML4 and sent a blank (not a space) to the server from every browser:
<option> </option>
Future
It would make my heart glad if the spec was updated to explicitly allow a blank option. Preferably using the briefest syntax. Either of the following would be great:
<option />
<option></option>
Test File
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Test</title>
</head>
<body>
<form action="index.html" method="post">
<select name="sel">
<option label=" "></option>
</select>
</form>
</body>
</html>
<td><b>Field Label:</b><br>
<select style='align:left; width:100%;' id='some_id' name='some_name'>
<option hidden selected>Select one...</option>
<option value='Value1'>OptLabel1</option>
<option value='Value2'>OptLabel2</option>
<option value='Value3'>OptLabel3</option></select>
</td>
Just put "hidden" on option you want to hide on dropdown list.
Solution that works by only using CSS:
A: Inline CSS
<select>
<option style="display:none;"></option>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
B: CSS Style Sheet
If you have a CSS file at hand, you can target the first option using:
select.first-opt-hidden option:first-of-type {
display:none;
}
<select class="first-opt-hidden">
<option></option>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
This should help:
https://www.w3schools.com/tags/att_select_required.asp
<form>
<select required>
<option value="">None</option>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>
<button type="submit">Submit</button>
</form>
Just a small remark:
some Safari browsers do not seem to respect neither the "hidden" attribute nor the style setting "display:none" (tested with Safari 12.1 under MacOS 10.12.6). Without an explicit placeholder text, these browsers simply show an empty first line in the list of options. It may therefore be useful to always provide some explanatory text for this "dummy" entry:
<option hidden disabled selected value>(select an option)</option>
Thanks to the "disabled" attribute, it won't be actively selected anyway.
<select required>
<option value="" disabled selected>None</option>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>
You can avoid custom validation in this case.
I understand what you are trying to do.The best and the most successful way is :
<select name='department' required>
<option value="">None</option>
<option value="Teaching">Teaching department</option>
<option value="nonTeaching">Non-teaching department</option>
</select>
I found it really interesting because I just experienced the same thing not so long time ago.
However, I came across to an example on the Internet about the solution regarding this.
Without any further ado, see the code fragment below:
<select>
<option value data-isdefault="true">--Choose one Option--</option>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
With that, it will stay un-submittable but selectable, anytime. More convenience for User Interface and great for User Experience.
Well that's all, I hope it helps. Cheers!
There is no HTML solution. By the HTML 4.01 spec, browser behavior is undefined if none of the option elements has the selected attribute, and what browsers do in practice is that they make the first option pre-selected.
As a workaround, you could replace the select element by a set of input type=radio elements (with the same name attribute). This creates a control of the same kind though with different appearance and user interface. If none of the input type=radio elements has the checked attribute, none of them is initially selected in most modern browsers.
I'm using Laravel 5 framework and #Gambi `s answer worked for me as well but with some changes for my project.
I have the option values in a database table and I use them with a foreach statement. But before the statement I have added an option with #Gambit suggested settings and it worked.
Here my exemple:
#isset($keys)
<select>
<option disabled selected value></option>
#foreach($keys as $key)
<option>{{$key->value)</option>
#endforeach
</select>
#endisset
I hope this helps someone as well. Keep up the good work!
Try this:
<h2>Favorite color</h2>
<select name="color">
<option value=""></option>
<option>Pink</option>
<option>Red</option>
<option>Blue</option>
</select>
The first option in the drop down would be blank.
In order to show please select a value in drop down and hide it after some value is selected . please use the below code.
it will also support required validation.
<select class="form-control" required>
<option disabled selected value style="display:none;">--Please select a value</option>
<option >Data 1</option>
<option >Data 2</option>
<option >Data 3</option>
</select>
If you are using Angular (2+), (or any other framework), you could add some logic. The logic would be: only display an empty option if the user did not select any other yet.
So after the user selected an option, the empty option disappears.
For Angular (9) this would look something like this:
<select>
<option *ngIf="(hasOptionSelected$ | async) === false"></option>
<option *ngFor="let option of (options$ | async)[value]="option.id">{{ option.title }}</option>
</select>
For those who are using <select multiple> (combobox; no dropdown), this worked for me:
<select size=1 disabled multiple>
<option hidden selected></option>
<option>My Option</option>
</select>
If you don't need any empty option at first, try this first line:
<option style="display:none"></option>
just use "..option hidden selected.." as default option
I guess a good idea would be to use the radio buttons, set #1 as default and hide it, give it for example a
name="init" and a value="null" or whatever, up to you!
this way the radio buttons list has a value definitely, but default of null can be used logically!
I think it's not necessary to elaborate further, since the idea can easily be implemented with display: none; or visibility: hidden;
... whereas I think the first one display: none; is the better option:
In react, you can give a dummy value (say -1) with select tag as below and same value can be used with this disabled option of yours. (WORKED FOR ME)
const nonEmpty = selected[identifierField] || false;
<select
onChange={(e) => {
onSelect(
options.find((option) => option[identifierField] === e.target.value)
);
}}
value={nonEmpty || -1}
>
<option disabled value={-1}>Select Option</option>
{options.map((option) => (
<option key={option[identifierField]} value={option[identifierField]}>
{option[displayField]}
</option>
))}
</select>
option style="display:none"
Is bad solution for Tablet: iPad Pro / iOS 15 / Safari
An unnecessary row in the dropdown appears, only for real devices. Doesn`t reproduce on the emulator.
Try this:
<select>
<option value="">
<option>Option 1
<option>Option 2
<option>Option 3
</select>
Validates in HTML5. Works with required attribute in select element. Can be re-selected. Works in Google Chrome 45, Internet Explorer 11, Edge, Firefox 41.

value attribute on <select> tag not selecting default option

Perhaps i'm misunderstanding here, but given the following html:
<select value="2">
<option value="1">Something</option>
<option value="2">Something else</option>
</select>
I would expect "Something else" to be the default selected option. However, it does not seem to be. Why is this, and what should I be doing differently?
You use selected attribute on an option element to specify default option.
<select>
<option value="1">Something</option>
<option value="2" selected="selected">Something else</option> // this is default
</select>
select elements do not have a value attribute.
The only way to have a default option is to have selected in the option tag.
<SELECT>
<OPTION>Something
<OPTION SELECTED>Something Else
React JS
Some coding implementations such as ReactJS allow you to use a value attribute with the <select> tag so this would be perfectly valid code:
<select value="2">
<option value="1">Something</option>
<option value="2">Something else</option>
</select>
So if you are seeing code examples like this it is likely because it is in React or other similar library/framework.
Of course, with this approach, typically you would want to specify the value in state, so that it is updateable.
HTML with Attribute Minimization:
However, if you are using purely HTML you must use the selected attribute in your <option> tag as follows:
<select>
<option value="1">Something</option>
<option value="2" selected>Something else</option>
</select>
HTML with Full Attribute Specification:
The above uses attribute minimization, but you can also specify the full form if you want:
<select>
<option value="1">Something</option>
<option value="2" selected="selected">Something else</option>
</select>
The <select> element does not have a value attribute so that is ignored. So, you have a single selection <select> and none of its <option> elements have the selected attribute, that means that the first <option> is taken as the default selection.
I know this post is quite old but in case anyone else is struggling with this you can implement the functionality you are looking for using jquery.
The full code using php would be something like this
PHP
if ($_SERVER['REQUEST_METHOD']== "POST") {
$thing = $_POST['things'];
} else {
$thing ="";
}
HTML
<select name='things' value="<?php echo $thing; ?>">
<option value="1">Something</option>
<option value="2">Something else</option>
</select>
JQUERY
$(function() {
$("select[value]").each(function() {
$(this).val(this.getAttribute("value"));
});
}); //end document ready
This will allow the select options chosen by the user to remain selected
after the page has re-loaded via post instead of returning
to the default values.
You have to use select attribute. in below code, a swift option will be selected by default
<select name="myCar" id="car">
<option value="ind">Indica</option>
<option value="swf" selected>Swift</option>
</select>

Does Native HTML have a ListBox element

Does native HTML have a listbox element? You know how it has a drop box element (called select), does it also have a listbox?
If not, do you know how I could place a list box in my Website.
One method, is to create a table & have each element detect the onclick event. But I dont want to make my own just yet. Are javascript widgets easy to use?
Use a select list:
<select multiple="multiple" size="2">
<option value="Whatever">One</option>
<option value="Other">Two</option>
</select>
#Myles has the select box which is correct, you can also allow multiple select options.
<select multiple="multiple">
<option value="opt1">Option 1</option>
<option value="opt2">Option 2</option>
<option value="opt3">Option 3</option>
</select>
Add the multiple attribute to a normal <select> and use the size attribute to determine how many rows you want shown. (If you don't set the size attribute, then all options will be visible.):
<select multiple="multiple" size="5">
See example.
I think what you need is the select tag, but set the selects attributes of multiple and size. Here is a reference http://www.w3schools.com/tags/tag_select.asp.
<select multiple='multiple' size='3'>
<option value='o1'>Red</option>
<option value='o2'>Green</option>
<option value='o3'>Blue</option>
</select>
At this moment the standards do not have a listbox element.
There's a web spec in progress about the <selectmenu> element which does have a listbox slot (not element). Possibly this could end up being back in the <select> element
If you want to read more about it:
https://open-ui.org/prototypes/selectmenu
https://css-tricks.com/the-selectmenu-element/

How can I hide one field of an HTML form?

I have a simple HTML form that I'm using to drive site search for a website I'm creating.
Two of the fields should not be used together, such as "make" and "model" of a car. You wouldn't want someone searching for a "Ford Ram Truck," for instance.
How can I modify my form so that if a certain value in one of the fields is selected, the other field disappears?
Thank you for your help!
<select name="make">
<option value="item 1">item 1</option>
<option value="item 2">item 2</option>
</select>
<select name="model">
<option value="item 1">item 1</option>
<option value="item 2">item 2</option>
</select>
<input name="" type="submit" />
You would need to use javascript and hook up to the change event of the radio buttons.
In your javascript you can set the visibility of any form element to hidden or visible (depending on which you want).
You would still need to validate/check on the server side in order to avoid such a search (since javascript may be off or a malicious user might override your client side validation).
I think Chained Select Menu can solve your problem.