Does dropdown element support "required=true" attribute? I have a usecase where I want users to compulsorily select a dropdown option, but by default I don't not want to prompt any of the options.
If not, why not?
Yes, it does have required attribute. See below snapshot.
<form>
<select required="required">
<option value="">None</option>
<option value="Test1">Test1</option>
<option value="Test2">Test1</option>
</select>
<input type="submit">
</form>
Documentation
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/select
Related
I already apply <Required> tag in HTML <Select> but not working. The form is still able to proceed to the next step even not select anything at first step. Anyone know to solve it?
<label>Region :</label>
<select id="Region" class="custom-select form-control" required>
<option value="">Select Region</option>
<option value="central" id="Central">Central</option>
<option value="northern" id="Northern">Northern</option>
</select>
Have you declared your web page using HTML5? Make sure you declare the following statement at the beginning of the page
<!DOCTYPE html>
The required attribute is only available in HTML5 and only supported by specific browsers... w3schools Required Attribute
Having tested your original code in HTML5, it works.
You could get rid of the select option tag entirely, and place the value select option in the select tag itself.
<label>Region:</label>
<select value="Select Option" id="Region" class="custom-select form- control" required>
<option value="central" id="Central">Central</option>
<option value="northern" id="Northern">Northern</option>
</select>
Your code works it depends on the browser you use or the way that you are using it. I wrote a sample code for you. Hope it may help you:
<!DOCTYPE html>
<html>
<body>
<form >
<label>Region :</label>
<select id="Region" class="custom-select form-control" required>
<option value="">Select Region</option>
<option value="central" id="Central">Central</option>
<option value="northern" id="Northern">Northern</option>
</select>
<input type="submit">
</form>
</body>
</html>
So in the code above if you do not choose anything it will not let you submit.
I have on this check in form:
<label>Check in date </label>
<select id="day">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="month">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="year">
<option value="1">2012</option>
<option value="2">2013</option>
</select>
As you can see, the user will choose the month, the day and the year on different select boxes, however, only one label should exist for all three.
What would be the proper way to do this with HTML ?
Update:
I'm concerned with the accessibility hit that we may have on developing something like the code above. I mean, a blind user should be able to listen each label in order to fill this form...
The problem with using one label for all three input boxes is that an non-sighted user is not going to know which of three boxes the focus is in because the same text will be read out in each case. There's a number of approaches possible. Maybe the safest is to have a label for each box, but hide those labels off to the left side of the viewport. Another possibility which ought to work, but I haven't tested would be this:
<fieldset>
<legend>Check in date</legend>
<select id="day" aria-label="day">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="month" aria-label="month">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<select id="year" aria-label="year">
<option value="1">2012</option>
<option value="2">2013</option>
</select>
</fieldset>
Following with the answer from #Alohci, you can also use aria-labelledby and reverse the naming reference (which I think is a bit closer to the convention you were looking for):
<label id="date">Check in date</label>
<select aria-labelledby="date">
<!-- ... -->
</select>
<select aria-labelledby="date">
<!-- ... -->
</select>
<select aria-labelledby="date">
<!-- ... -->
</select>
Also note, as per the W3C on labelled-by:
If the label text is visible on screen, authors SHOULD use aria-labelledby and SHOULD NOT use aria-label. Use aria-label only if the interface is such that it is not possible to have a visible label on the screen. User agents give precedence to aria-labelledby over aria-label when computing the accessible name property.
You cannot associate a label element with more than one control. This is described in the definition of label.
You could give each select element its own label.
A better approach is to have a single text input field for a date. Then there is no problem with label. It means more work, since you have to parse the data server-side, and you should also parse it client-side (for checks, so that the user can immediately be informed of problems). But it is better usability (surely it is faster to type in a date than to use three clumsy dropdowns) and better accessibility. You need to decide on a date format and clearly tell the user what the expected format is.
There is no proper way; a label refers to one element. Just point it to the first one.
<label for="day">Check in date </label>
You could also use a specifically-styled <fieldset> if you like semantics, but I think that's a bit overkill. An <input type="date"> is probably the best option here, as it is one element that can be pointed to by your <label>, is more semantic, and can be somewhat friendlier if you implement a good date picker to go along with it.
If you want to stick with the <select>s, try giving each one a title attribute for accessibility.
Trying to improve #Bracketworks answer:
<label id="date">Check in date</label>
<label for="day" id="label_day">Day</label>
<select id="day" aria-labelledby="date label_day">
<!-- ... -->
</select>
<label for="month" id="label_month">Month</label>
<select id="month" aria-labelledby="date label_month">
<!-- ... -->
</select>
<label for="year" id="label_year">Year</label>
<select id="year" aria-labelledby="date label_year">
<!-- ... -->
</select>
See example 1 of MDN's "Using the aria-labelledby attribute".
HTML5's input type="date" might be useful too, particularly if you're using month/day/year select boxes as a way to limit date selection possibilities. This input element supports min and max date attributes, so you can apply your limitations. It's not supported by older browsers, but I've seen smart cookies use jQueryUI's datepicker as a shim (by using capabilities detection to determine type="date" support, then loading in and invoking the datepicker only if it isn't supported natively).
Is there a way to invalidate a form if value="0" in my select tag is chosen? The reason I did this is to have a default select option show up before a user see's anything.
But even if a user doesn't choose anything, the form is valid.
<form name="add_task_frm" ng-submit="!add_task_frm.$valid || functiontoUse()" novalidate>
<input type="text" ng-model="name" required />
<select ng-model="action" required>
<option value="0" selected disabled>Choose an Action</option>
<option value="description">See Description</option>
<option value="view">View</option>
</select>
<button type="submit">Submit</button>
</form>
I think you could just remove the value from the first option this should make it invalid if the user does not select anything. However I would recommend changing this implementation to use ng-options.
https://docs.angularjs.org/api/ng/directive/ngOptions
Using "required" on a dropdown form element with a "disabled" selection works in Firefox to prevent users from submitting a form without selecting something from the dropdown list, but not in Chrome. Can you help?
<select id="topic" class="form-control" required="required">
<option disabled selected>select genre</option>
<option>All genres (whatever works)</option>
<option>boogers</option>
<option>cheese</option>
<option>dumplings</option>
</select>
This may work
<option selected="true" disabled="disabled">select genre</option>
src: How to show disable HTML select option in by default?
To get it working just add value="" to your default option. This answer provides some HTML5 documentation on the matter.
Can I apply the required attribute to <select> fields in HTML5?
With input of type text the attribute required is available. It is not the case for select inputs. So how to make them required ?
FIDDLE
<form>
<select required>
<option></option><!--If this is selected require pop up will appear -->
<option>test</option><!--If this is selected form will be submitted -->
</select>
<input type="submit">
</form>
You can make them required by using html5 attribute required just like below.
<select required>
<option value="">select an option</option>
<option value="value1">Value 1</option>
<option value="value2">Value 2</option>
</select>
View Example in jsfiddle http://jsfiddle.net/88rXX/
Set a default value then on form submission check to see if that default value has changed.
If you're using the JQuery validation plug-in, try this Validate select box
You do have to remember though that just because it's validated client side, doesn't mean you shouldn't also check server side.
use it based on html 5. otherwise you can use any plugin