I have a select element and no matter what I try, the option values are blank. The number of options in the drop down is correct, but they are blank. Here is the html:
<label for="accountBrokerageName">Brokerage:</label>
<select id="accountBrokerageName">
<option value="Interactive Brokers, LLC"></option>
<option value="Vanguard"></option>
</select>
I'm assuming some css from another library is overriding the standard select>option css. I've tried commenting out each linked library one at a time but no joy. I've tried adding a .clear-css class to the option like this:
.clear-css {
all:unset;
}
and append it to all options using jquery just before it is used, like this:
$('option').addClass('clear-css');
Still blank.
I've also tried
.clear-css {
all:initial;
}
Still blank.
I also tried adding the clear-css class to the select element, but that causes the whole select element to disappear.
Any suggestions?
You need to include the values for each option between the opening and closing <option> tags. The value doesn't need to match the text content. In fact, it's usually better to remove any special characters and even spaces when working with external APIs, like this:
// This JS is just for the sake of example, to log the new value with each change
const select = document.getElementById('accountBrokerageName');
select.addEventListener('change', () => console.log(select.value));
<label for="accountBrokerageName">Brokerage:</label>
<select id="accountBrokerageName">
<option value="" disabled selected>Choose an option...</option>
<option value="interactive-brokers-llc">Interactive Brokers, LLC</option>
<option value="vanguard">Vanguard</option>
</select>
Select values must be within the actual <option> tags:
<label for="accountBrokerageName">Brokerage:</label>
<select id="accountBrokerageName">
<option value="Interactive Brokers, LLC">Interactive Brokers, LLC</option>
<option value="Vanguard">Vanguard</option>
</select>
Related
I have an html form element that is a <select> and whenever I add options and specify a value for the options, it adds a space/margin above the form select field. If I modify the code and set all options to value="" then the space/margin goes away.
<select id="authorizenet_cc_type" name="payment[cc_type]" class="required-entry validate-cc-type-select">
<option value="">--Please Select--</option>
<option value="">American Express</option>
<option value="">Visa</option>
<option value="">MasterCard</option>
<option value="">Discover</option>
</select>
The code above gives me:
But when I add values to each option, I get the following result:
How can I fix this to have the values set, but eliminate the space that it creates?
EDIT: It seems like it might be some sort of JavaScript code or something. When the page first loads it's OK for about 1 second, then once the placeholder info loads into all the other input fields, the space pops up.
Is it possible for <select>-lists to reference the same list of options, similar to <input> with <datalist>?
I generate a list of several entries, where (among other things) the user selects a value of a dropdownlist. The options in this list are the same for each entry, so I would prefer it, if the list of options doesn't need to be re-added for each dropdownlist.
I can't use <input> with <datalist>, since the user may only choose from available entries.
you could do this using jquery easily,
<datalist id="mylist">
<option value="a">
<option value="b">
<option value="b">
</datalist>
<select class="someSelect">
<select class="someSelect">
$(".someSelect").html( $("#mylist").html() );
this would replace all your select list from the datalist
This is not realy the good answer. There is a big difference between 'datalist' and 'select' which for as far as I read till yet stays unspoken : in a select the 'value' can be different from the visualized 'innerHTML', which is not the case in a datalist. So what we need is a kind of 'select' with an attribute like 'selectlist="countries' the selectlist then would look like this :
<selectlist>
<option value='1'>Belgium</option>
<option value='2'>France</option>
</selectlist>
and can be reused in more then one 'select' and send the value back to the server instead of the innerHTML.
How implement subj?
when i write:
<form>
<select>
<option value="0">aaaa</option>
<option value="1">bbbb</option>
</select>
</form>
then default selected item is "aaaa"
when i write:
<form>
<select>
<option value=""></option>
<option value="0">aaaa</option>
<option value="1">bbbb</option>
</select>
</form>
then default selected item is blank, but this blank item presents in drop down.
how i can implement SELECT tag with default blank value that hidden in dropdown list?
Just use disabled and/or hidden attributes:
<option selected disabled hidden style='display: none' value=''></option>
selected makes this option the default one.
disabled makes this option unclickable.
style='display: none' makes this option not displayed in older browsers. See: Can I Use documentation for hidden attribute.
hidden makes this option to don't be displayed in the drop-down list.
You can by setting selectedIndex to -1 using .prop: http://jsfiddle.net/R9auG/.
For older jQuery versions use .attr instead of .prop: http://jsfiddle.net/R9auG/71/.
Simply using
<option value="" selected disabled>Please select an option...</option>
will work anywhere without script and allow you to instruct the user at the same time.
<select>
<option value="" style="display:none;"></option>
<option value="0">aaaa</option>
<option value="1">bbbb</option>
</select>
Here is a simple way to do it using plain JavaScript. This is the vanilla equivalent of the jQuery script posted by pimvdb. You can test it here.
<script type='text/javascript'>
window.onload = function(){
document.getElementById('id_here').selectedIndex = -1;
}
</script>
.
<select id="id_here">
<option>aaaa</option>
<option>bbbb</option>
</select>
Make sure the "id_here" matches in the form and in the JavaScript.
You can't. They simply do not work that way. A drop down menu must have one of its options selected at all times.
You could (although I don't recommend it) watch for a change event and then use JS to delete the first option if it is blank.
For purely html #isherwood has a great solution. For jQuery, give your select drop down an ID then select it with jQuery:
<form>
<select id="myDropDown">
<option value="0">aaaa</option>
<option value="1">bbbb</option>
</select>
</form>
Then use this jQuery to clear the drop down on page load:
$(document).ready(function() {
$('#myDropDown').val('');
});
Or put it inside a function by itself:
$('#myDropDown').val('');
accomplishes what you're looking for and it is easy to put this in functions that may get called on your page if you need to blank out the drop down without reloading the page.
You can try this snippet
$("#your-id")[0].selectedIndex = -1
It worked for me.
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/
Error: End tag for 'optgroup' which is not finished. You have probably failed to
include a required child element. Hence the parent element is "not finished",
not complete.
I want to achieve something like this in select options.
USA
UK
--
Afghanistan
I want to put few important countries on top and then a non-selectable divider and then ordered list of remaining countries.
I put this divider using empty 'optgroup'. While it works perfectly in all browser, I get validation error.
What could be other approaches to implement this?
Similar to what #ZippyV wrote, you can just use an <option> and make it be disabled:
<option disabled='disabled'>--</option>
That won't be selectable. Also if it were me I'd use an m-dash and not two hyphens:
<option disabled='disabled'>—</option>
You didn't post any code, but I bet you have something like:
<select>
<option>USA</option>
<option>UK</option>
<optgroup label="---"></optgroup>
<option>Afghanistan</option>
<option>...</option>
</select>
This is invalid because your optgroup contains no option elements. You need to use something like:
<select>
<option>USA</option>
<option>UK</option>
<optgroup label="---">
<option>Afghanistan</option>
<option>...</option>
</optgroup>
</select>
Don't use an optgroup for this.
Just put this <option val="-">--</option> in your code