I have a html form which has a dropdown consisting of a few values. If the user does not select an option and moves to the next field, I need to give an error message. I have used the required attribute but it does not fire in Chrome and Firefox.
This is my code :
<select name="gender" id="gender" style="max-width:100%" required>
<option value="">Select Gender</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
<option value="Other">Other</option>
</select>
The required attribute does not work on Chrome and Firefox. A JavaScript solution would also be good. At the time of submitting the data I am checking for empty fields but I would like to display an error message if the user does not select a value from the dropdown and moves to the next field.
Use below code, not need any script, use form tag
<!DOCTYPE html>
<html>
<body>
<form>
<select required>
<option value="">None</option>
<option value="demo">demo</option>
<option value="demo1">demo1</option>
<option value="demo2">demo2</option>
<option value="demo3">demo3</option>
</select>
<input type="submit">
</form>
</body>
</html>
Try using the onfocusout option on your select paired with some Javascript.
HTML
<select name="gender" id="gender" onfocusout="check()" style="max-width:100%" required>
<option value="">Select Gender</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
<option value="Other">Other</option>
</select>
JS
function check(){
var x = document.getElementById("gender").selectedOptions[0].label;
if(x == "Select Gender"){
alert("Please select an option.");
}
}
CodePen.io: https://codepen.io/anon/pen/XQxQgw
There's undoubtedly a more efficient way of doing this and you would need to tweak the JS to check if all fields have been completed etc. but that's my two cents in a pinch!
Related
I got a problem when I'm validating this. I can't understand how do I fix it?
<Label for="religion">Select Your Religion</Label>
<select required class="form-control" id="religion">
<option disabled>Select Your Religion</option>
<option value="hindu">Hindu</option>
<option value="muslim">Muslim</option>
<option value="christian">Christian</option>
<option value="buddhist">Buddhist</option>
<option value="other">Other</option>
</select>
Here is the problem I'm getting on https://validator.w3.org/nu :
The first child option element of a select element with a required attribute, and without a multiple attribute, and without a size attribute whose value is greater than 1, must have either an empty value attribute, or must have no text content. Consider either adding a placeholder option label, or adding a size attribute with a value equal to the number of option elements.
The name attribute is missing for your select option
Also, the select option should have value=""
<Label for="religion">Select Your Religion</Label>
<select required name="religion" class="form-control" id="religion">
<option value="">Select Your Religion</option>
<option value="hindu">Hindu</option>
<option value="muslim">Muslim</option>
<option value="christian">Christian</option>
<option value="buddhist">Buddhist</option>
<option value="other">Other</option>
</select>
Like the validator message says
...must have either an empty value attribute, or must have no text content...
Make sure your option has an empty value, like <option disabled value="">
<Label for="religion">Select Your Religion</Label>
<select required class="form-control" id="religion">
<option disabled value="">Select Your Religion</option>
<option value="hindu">Hindu</option>
<option value="muslim">Muslim</option>
<option value="christian">Christian</option>
<option value="buddhist">Buddhist</option>
<option value="other">Other</option>
</select>
The "required" validation is working for form
<!DOCTYPE html>
<html>
<body>
<form action=''>
<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>
<input type="submit">
</form>
</body>
</html>
but is not working for the same form if I move the option with empty value down the list.
<!DOCTYPE html>
<html>
<body>
<form action=''>
<select required>
<option value="volvo">Volvo</option>
<option value="saab" >Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
<option value="">None</option>
</select>
<input type="submit">
</form>
</body>
</html>
Why?
How exactly does the select element validation work?
Referred to the following: https://www.w3schools.com/tags/att_select_required.asp
The following is from w3 docs:
The required attribute is a boolean attribute. When specified, the
user will be required to select a value before submitting the form.
...
if the value of the first option element in the select element's
list of options (if any) is the empty string
...
Which means that the required attribute works only if the value of the first element is empty
It's not an issue with Select2 but with the way browser work with select tag. By default, the first option is selected by the browser.
So, in the first case "None" option is selected and hence your validation catch the error because the first option value is null.
In the second, case the first option is not null. Hence there is no validation error in this case.
To correct it, add an empty option with an empty value and set the attribute as selected disabled
Demo: https://jsfiddle.net/rLmztr2d/2909/
HTML:
<form>
<select required id="example">
<option disabled selected></option>
<option value="volvo">Volvo</option>
<option value="saab" >Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
<option value="">None</option>
</select>
<input type="submit">
</form>
JS:
$('#example').select2();
I have a form in which I have added "Please Select" option for the drop-down.
The form should work in a way that if users doesn't select values 1, 2-5, 6-15, 16-30 etc then the form should not submit.
In my form, if I select "Please Select" then the form gets submit as it being treated as 1, 2-5, 6-15, 16-30, etc.
The HTML codes for the form generated at run time are:
<select name="input_12" id="input_37_12" class="medium gfield_select" tabindex="5" aria-required="true" aria-invalid="false">
<option value="Please Select" selected="selected">Please Select</option>
<option value="1">1</option>
<option value="2-5">2-5</option>
<option value="6-15">6-15</option>
<option value="16-30">16-30</option>
<option value="31-100">31-100</option>
<option value="101-250">101-250</option>
<option value="251-1000">251-1000</option>
<option value="1001-2500">1001-2500</option>
<option value="2501 +">2501 +</option>
</select>
Problem Statement:
I am wondering what changes I should make in the HTML code above so that "Please Select" option is not treated as other drop-down values (1, 2-5, 6-15, 16-30 etc ) in the HTML.
To force form validation on a select input, you need to use the required attribute on your select form and set the value of the initial option to "".
Note: aria-required="true" works fine as well, especially for browsers that don't yet support HTML5, I just prefer the shorter HTML5 alternative. This also applies to selected="selected" vs selected.
<form>
<select name="input_12" id="input_37_12" class="medium gfield_select" tabindex="5" required aria-invalid="false">
<option value="" selected>Please Select</option>
<option value="1">1</option>
<option value="2-5">2-5</option>
<option value="6-15">6-15</option>
<option value="16-30">16-30</option>
<option value="31-100">31-100</option>
<option value="101-250">101-250</option>
<option value="251-1000">251-1000</option>
<option value="1001-2500">1001-2500</option>
<option value="2501 +">2501 +</option>
</select>
<button type="submit">Submit</button>
</form>
Edit: This can also be done via Javascript.
// Obtain our form via its ID
var form = document.querySelector('form');
// Add a listener to our form to wait for its submission
if (form.addEventListener) {
form.addEventListener("submit", validate, false); //Modern browsers
} else if (form.attachEvent) {
form.attachEvent('onsubmit', validate); //Old IE
}
function validate(e) {
var select = e.target.querySelector("select");
// Get the value of our selected option
var selectedOption = select.options[select.selectedIndex].value;
// Compare the value of the default option to the selected option
if (selectedOption === "Please Select") {
// Trigger Error and prevent the form submission
alert("Please select an option!")
e.preventDefault();
}
}
<form>
<select name="input_12" id="input_37_12" class="medium gfield_select" tabindex="5" aria-required="true" aria-invalid="false">
<option value="Please Select" selected="selected">Please Select</option>
<option value="1">1</option>
<option value="2-5">2-5</option>
<option value="6-15">6-15</option>
<option value="16-30">16-30</option>
<option value="31-100">31-100</option>
<option value="101-250">101-250</option>
<option value="251-1000">251-1000</option>
<option value="1001-2500">1001-2500</option>
<option value="2501 +">2501 +</option>
</select>
<button type="submit">Button</button>
</form>
To simply prevent the users from selecting an option just add disabled in the html for the option (as pointed out in the question from the comment marking this as a possible duplicate, #csmckelvey).
However, you can also simply add a display:none to the option:
select option:first-of-type{
display:none;
}
At least works on android, and yet show the text of the first option (even though it Should be hidden - dont Know why).
Anyways it's important to Remember to validate the form as the other answer suggests.
I am trying to make a dropdown list that contains a placeholder. It doesn't seem to support placeholder="stuff" as other forms do. Is there a different way to obtain a placeholder in my dropdown?
Yes just "selected disabled" in the option.
<select>
<option value="" selected disabled>Please select</option>
<option value="">A</option>
<option value="">B</option>
<option value="">C</option>
</select>
Link to fiddle
You can also view the answer at
https://stackoverflow.com/a/5859221/1225125
Use hidden:
<select>
<option hidden >Display but don't show in list</option>
<option> text 1 </option>
<option> text 2 </option>
<option> text 3 </option>
</select>
dropdown or select doesn't have a placeholder because HTML doesn't support it but it's possible to create same effect so it looks the same as other inputs placeholder
$('select').change(function() {
if ($(this).children('option:first-child').is(':selected')) {
$(this).addClass('placeholder');
} else {
$(this).removeClass('placeholder');
}
});
.placeholder{color: grey;}
select option:first-child{color: grey; display: none;}
select option{color: #555;} // bootstrap default color
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select class="form-control placeholder">
<option value="">Your Placeholder Text</option>
<option value="1">Text 1</option>
<option value="2">Text 2</option>
<option value="3">Text 3</option>
</select>
if you want to see first option in list remove display property from css
Most of the options are problematic for multi-select.
Place Title attribute, and make first option as data-hidden="true"
<select class="selectpicker" title="Some placeholder text...">
<option data-hidden="true"></option>
<option>First</option>
<option>Second</option>
</select>
If you are initializing the select field through javascript, the following can be added to replace the default placeholder text
noneSelectedText: 'Insert Placeholder text'
example: if you have:
<select class='picker'></select>
in your javascript, you initialize the selectpicker like this
$('.picker').selectpicker({noneSelectedText: 'Insert Placeholder text'});
Add hidden attribute:
<select>
<option value="" selected disabled hidden>Please select</option>
<option value="">A</option>
<option value="">B</option>
<option value="">C</option>
</select>
Try this:
<select class="form-control" required>
<option value="" selected hidden>Select...</option>
when using required + value="" then user can not select it
using hidden will make it hidden from the options list, when the user open the options box
Try #title = "stuff". It worked for me.
All this options are.... improvisations.
Bootstrap already offers a solution for this.
If you want to change the placeholder for all your dropdown elements you can change the value of
noneSelectedText
in the bootstrap file.
To change individualy, you can use TITLE parameter.
example:
<div class="form-group">
<label class="control-label col-xs-2" id="country">Continent:</label>
<div class="col-xs-9">
<select name="zones[]" class="selectpicker" title="All continents" id="zones" multiple >
<option value="Africa">Africa</option>
<option value="Asia">Asia</option>
<option value="North America">America North</option>
<option value="South America">America South</option>
<option value="Antarctica">Antarctica</option>
<option value="Australia">Australia</option>
<option value="Europe">Europe</option>
</select>
</div>
</div>
Using Bootstrap, This is what you can do. Using class "text-hide", the disabled option will be shown at first but not on the list.
<select class="form-control" >
<option selected disabled class="text-hide">Title</option>
<option>A</option>
<option>B</option>
<option>C</option>
</select>
in bootstrap-select.js Find title: null, and remove it.
add title="YOUR TEXT" in <select> element.
Fine :)
Example:
<select title="Please Choose one item">
<option value="">A</option>
<option value="">B</option>
<option value="">C</option>
</select>
I think, the Dropdown box with a class and JQuery code to disable the first option for user to select, will work perfectly as Select Box placeholder.
<select class="selectboxclass">
<option value="">- Please Select -</option>
<option value="IN">India</option>
<option value="US">America</option>
</select>
Make the first option disabled by JQuery.
<script>
$('select.selectboxclass option:first').attr('disabled', true);
</script>
This will make the first option of Dropdown as Placeholder and user will no longer able to select the first option.
Hope It helps!!
The right way to achieve what you are looking for is to use the title attribute.
The title global attribute contains text representing advisory information related to the element it belongs to.
title="Choose..."
for example:
<select class="form-control selectpicker" name="example" title="Choose...">
<option value="all">ABCDEFG</option>
<option value="all">EFG</option>
</select>
check the documentation for more info about bootstrap-select
custom-button-text
Here's another way to do it
<select name="GROUPINGS[xxxxxx]" style="width: 60%;" required>
<option value="">Choose Platform</option>
<option value="iOS">iOS</option>
<option value="Android">Android</option>
<option value="Windows">Windows</option>
</select>
"Choose Platform" becomes the placeholder and the 'required' property ensures that the user has to select one of the options.
Very useful, when you don't want to user field names or Labels.
Bootstrap select has an noneSelectedText option. You can set it via data-none-selected-text attribute.
Documentation.
For .html page
<select>
<option value="" selected disabled>Please select</option>
<option value="">A</option>
<option value="">B</option>
<option value="">C</option>
</select>
for .jsp or any other servlet page.
<select>
<option value="" selected="true" disabled="true">Please select</option>
<option value="">A</option>
<option value="">B</option>
<option value="">C</option>
</select>
Using bootstrap, if you need to also add some values to the option to use for filters or other stuff you can simply add the class "bs-title-option" to the option that you want as a placeholder:
<select class="form-group">
<option class="bs-title-option" value="myVal">My PlaceHolder</option>
<option>A</option>
<option>B</option>
<option>c</option>
</select>
Bootstrap adds this class to the title attribute.
Solution for Angular 2
Create a label on top of the select
<label class="hidden-label" for="IsActive"
*ngIf="filterIsActive == undefined">Placeholder text</label>
<select class="form-control form-control-sm" type="text" name="filterIsActive"
[(ngModel)]="filterIsActive" id="IsActive">
<option value="true">true</option>
<option value="false">false</option>
</select>
and apply CSS to place it on top
.hidden-label {
position: absolute;
margin-top: .34rem;
margin-left: .56rem;
font-style: italic;
pointer-events: none;
}
pointer-events: none allows you to display the select when you click on the label, which is hidden when you select an option.
angular html css
<option value="" defaultValue disabled> Something </option>
you can replace defaultValue with selected but that would give warning.
This is for Bootstrap 4.0, you only need to enter selected on the first line, it acts as a placeholder. The values are not necessary, but if you want to add value 0-... that is up to you.
Much simpler than you may think:
<select class="custom-select">
<option selected>Open This</option>
<option value="">1st Choice</option>
<option value="">2nd Choice</option>
</select>
This is link will guide you for further information.
I want to have a drop down list using the select, option tag... but when it first appear I want it to have an information, such as "Please select a name" then the user clicks on the drop down list and selects from the available option... I tried to made the "Please select a name" as an option, but then the user will be able to select this... which is not what I want. Do I need to use javascript to have this feature or what do I need to do?
If there'a jquery way to do this, this would be much helpful
Try this:
<select>
<option value="" disabled="disabled" selected="selected">Please select a name</option>
<option value="1">One</option>
<option value="2">Two</option>
</select>
When the page loads, this option will be selected by default. However, as soon as the drop-down is clicked, the user won't be able to re-select this option.
<select>
<option value="" style="display:none">Choose one provider</option>
<option value="1">One</option>
<option value="2">Two</option>
</select>
This way the user cannot see this option, but it shows in the select box.
Have <option value="">- Please select a name -</option> as the first option and use JavaScript (and backend validation) to ensure the user has selected something other than an empty value.
This is an old post, but this worked for me
<select>
<option value="" disabled selected>Please select a name...</option>
<option>this</option>
<option>that</option>
</select>
<select name="test">
<option hidden="true">Please select a name</option>
<option value="Cash">Cash</option>
<option value="Draft">Demand Draft No.</option>
<option value="Cheque">Cheque No.</option>
</select>
Maybe this can help you resolve without JavaScript
http://htmlhelp.com/reference/html40/forms/option.html
See DISABLE option
Simple, I suppose. The onclick attribute works nicely...
<select onchange="if(this.value == '') this.selectedIndex = 1; ">
<option value="">Select an Option</option>
<option value="one">Option 1</option>
<option value="two">Option 2</option>
</select>
After a different option is selected, if the first option is selected, Option 1 will be selected. If you want an explanation on the javascript, just ask.
<select>
<option value="" disabled="disabled" selected="selected">Please select name</option>
<option value="Tom">Tom</option>
<option value="Marry">Marry</option>
<option value="Jane">Jane</option>
<option value="Harry">Harry</option>
</select>
If you want to achieve the same for the jquery-ui selectmenu control then you have to set 'display: none' in the open event handler and add '-menu' to the id string.
<select id="myid">
<option value="" disabled="disabled" selected="selected">Please select name</option>
<option value="Tom">Tom</option>
<option value="Marry">Mary</option>
<option value="Jane">Jane</option>
<option value="Harry">Harry</option>
</select>
$('select#listsTypeSelect').selectmenu({
change: function( event, data ) {
alert($(this).val());
},
open: function( event, ui ) {
$('ul#myid-menu li:first-child').css('display', 'none');
}
});
I'm sorry to necro an old post - but I found a better way of doing this
What I believe this poster wanted was :
<label for="mydropdown" datalabel="mydropdown">Country:</label>
<select name="mydropdown">
<option value="United States">United States</option>
<option value="Canada">Canada</option>
<option value="Mexico">Mexico</option>
<option value="Other">Not Listed</option>
</select>
I found this information in another post while searching for this same answer - Thanks
<select>
<option value="" disabled selected hidden>Select an Option</option>
<option value="one">Option 1</option>
<option value="two">Option 2</option>
</select>
Make a JavaScript control that before the submit cheek that the selected option is different to your first option
This is how I do this with JQuery...
using the jquery-watermark plugin (http://code.google.com/p/jquery-watermark/)
$('#inputId').watermark('Please select a name');
works like a charm!!
There is some good documentation at that google code site.
Hope this helps!
<select>
<option value="" disabled="disabled" selected="selected">Please select a
developer position</option>
<option value="1">Beginner</option>
<option value="2">Expert</option>
</select>
From what I understand, you are looking for a placeholder for your select options, which has to be selected when no value is pre-selected, and cannot be selected by user, or seen.
<select name="selectOne">
<option value="" disabled selected hidden>Choose an option</option>
<option value="this">This</option>
<option value="that">That</option>
</select>