Setting browser autofill values in dropdown JavaScript angular - javascript

I have an address form having Name, Address, Country and state, where country and state is dropdown.
Now User can autofill the form, but it does not work for dropdown. Is there any way that I can listen autofill event and then get the complete object of browser autofill values and then manually set the dropdown values?
I am not able to find anything related to this, any help?

Usually for a browser to autofill a select, input and textarea elements there needs to be:
a name and id attribute on the element
be a child of a form element
the form needs a submit button
You can find all these requirements here
You would then need to add the autocomplete="country" attribute for the country element and autocomplete="address-level1" for the state element.
Example:
<form>
<select id="country" name="country" autocomplete="country">
<option>Choose your country</option>
</select>
<select id="state" name="state" autocomplete="address-level1">
<option>Choose your state</option>
</select>
<button type="submit">Submit Form</button>
</form>

Related

When click button Selectlist goes default with Javascript

<select asp-for="ProductFilter.BrandId"
asp-items="#(new SelectList(Model.ProductFilter.Brands,"Id","Name"))">
<option>Chose one</option>
</select>
<button type="button" onclick="clearRadioButtons()" class="btn btn-outline-info mt-3">Clear</button>
I have some list items and 1 default item which is "Chose One" and what i want is when i click Clear button just make select list choosen value "Chose One" how can i do this with javascript? Thanks For helping!
For example i got A,B,C,D in options and of course default Chose one and when someone chose C and after click "Clear" button i want to make it "Chose One" back.
Add empty value to the default option and add an id to the select element:
<select id="brand-select" asp-for="ProductFilter.BrandId" asp-items="#(new SelectList(Model.ProductFilter.Brands,"Id","Name"))">
<option value="">Chose one</option>
</select>
Then select default option like this:
function clearRadioButtons() {
var selectElement = document.getElementById("brand-select");
selectElement.value = "";
}
To fulfill your requirements I'll propose two solutions that should (or at least one of them) work for you.
Option 1: Default Form Behavior (let the browser do the trick for you)
For this situation I'd rather use the reset button type of the form element. The button[type="reset"] resets all* the form fields to their original values when the browser loaded the page.
Here's an example, you may choose an option from the list and then click on "Reset" to revert the list to its original state.
<form>
<select>
<option value="" selected>Choose</option>
<option value="A">A</option>
<option value="B">B</option>
</select>
<button type="reset">Reset</button>
</form>
all:* keep in mind, the button[type="reset"] will try to reset all the form fields to their original values and not only your select element.
Note: in the above example, i intentianally set the option with the text "Choose" as selected using the selected attribute in order for that option to be selected no matter what its position in the select element.
Option 1: JavaScript Workaround
In case the first solution cannot be used, here's a solution that relies on JavaScript to do the trick.
The idea here is to set a default option by specifying an ID for it (so we can easily retrieve it by JavaScript) and an Event Listener on the button that resets the list.
const list = document.getElementById('list'),
defaultOption = document.getElementById('default-option'),
resetBtn = document.getElementById('reset-list');
// listen for "click" events on the "Reset" button
resetBtn.addEventListener('click', e => {
/**
* the below line is required only when you use a link (for example) instead of a button or the button type is different from "[type=button]".
/* The role of that line is to prevent the default behavior of the clicked element. In case of a link, the line prevents the unwanted jump on the page as the browser tries to follow the link and it scrolls the page all the way to the top (or simply follows the link if an "href" attribute is set on the "a" tag).
*/
e.preventDefault();
// reset the list
defaultOption.selected = !0;
});
<select id="list">
<option value="" id="default-option" selected>Choose</option>
<option value="A">A</option>
<option value="B">B</option>
</select>
<button type="button" id="reset-list">Reset</button>
I recommend using the selected attribute on the option you want to be reselected once the "Reset" button is clicked.

On checkbox click change select box into a textbox with the same ID

Wondering if it is possible that when a checkbox is clicked it changes the select box to a textbox with the same id "Wine_name"
Not really clued up when it comes to javascript, so any help will be greatly appreciated.
The reason I need this, when a user is filling out a form, if the selectbox does not have the option they want to select, they can click the check box which will then allow them to manually type in the text they want.
Well.. you can do it.. just keep in min that you have to disable the hidden input so that it wont be processed when the form is submited.
Have a look at the code that i've come up to do it.
I'm not sure it you really need the same 'id' attribute, if you're just sending a form and processing the result on the server side, you can 'name' the submitted parameters with the 'name' attribute. So that you can freely use different ids on the view side without changing the backend to conditionally verify it.
var checkbox = document.querySelector("#custom_value");
var select = document.querySelector("#selection");
var altSelect = document.querySelector("#selection_alt");
checkbox.addEventListener('change', function(event) {
select.classList.toggle('hidden');
select.disabled = !select.disabled;
altSelect.classList.toggle('hidden');
altSelect.disabled = !altSelect.disabled;
});
.hidden {
display: none;
}
<input type="checkbox" id="custom_value"> Alternative
<br>
<select id="selection" name="selection">
<option value="1">1</option>
<option value="1">2</option>
<option value="1">3</option>
<option value="1">4</option>
<option value="1">5</option>
</select>
<input type="text" disabled class="hidden" name="selection" id="selection_alt" placeholder="Custom value..">

jquery not changing value of text input

I'm trying to create a "How did you find us form element" and I'm having some jQuery trouble. The user selects from a list of options, one of which is "other". When selected other a text box that allows them to be more specific. In an effort to make this more user friendly that input is hidden when another option is displayed. I've got the jQuery working to show and hide the text input as the user changes the option but I would like it to clear any text in the text box in the event the user selects other, fills something in, then selects another option.
<label for="pcFindUs">How did you hear about us?</label>
<select name="pcFindUs" id="pcFindUs" onChange="getval();">
<option value="No Answer">Select One</option>
<option value="Internet Search">Internet search</option>
<option value="Internet Advertisement">Internet ad</option>
<option value="Soclail Media">Social media </option>
<option value="Unknown">I don't remember</option>
<option value="other">Other</option>
</select><br/>
<div id="pcHiddenOtherSpecify" style="display:none;">
<label for="pcFindUsSpecify">(Please Specify): </label><input type="text" value="" id="pcFindUsSpecify" name="pcFindUsSpecify" maxlength="50">
</div>
<script>
function getval(){
var values = $('#pcFindUs :selected').val();
if (values == "other"){
$("#pcHiddenOtherSpecify").css("display","block");
}else{
$("#pcHiddenOtherSpecify").attr("value","");
$("#pcHiddenOtherSpecify").css("display","none");
}
}
</script>
The pcHiddenOtherSpecify div containing the additional input appears and disappears just fine, but the value of #pcHiddenOtherSpecify still has whatever the user entered.
I've also tried
$("#pcHiddenOtherSpecify").val("");
With no luck. Any ideas what I may be doing wrong here?
You are trying to change the value of a div element, not an input. Try this:
$("#pcFindUsSpecify").val("");
Wrong ID
$("#pcFindUsSpecify").val("");
try
$("#pcFindUsSpecify").val("");
check it out
http://codepen.io/JcBurleson/pen/MKBBWq

HTML make <option> invalid

I have the following piece of code in a contact form for a site I am designing:
<select id="Category" name="Category">
<option value="0" selected="selected" disabled>Category</option>
<option value="1">General Info</option>
<option value="2">Booking</option>
<option value="3">Auditions</option>
</select>
I would like set the menu such that the user cannot leave category as the selected option. Is there any way to do this with HTML? If not, how would I do it with JavaScript?
Thank you
According to the HTML5 spec,
Constraint validation: If the element has its required attribute specified, and either none of the option elements in
the select element's list of options have their
selectedness set to true, or the only option element in
the select element's list of options with its
selectedness set to true is the placeholder label option,
then the element is suffering from being missing.
If a select element has a required attribute
specified, does not have a multiple attribute specified, and
has a display size of 1; and if the value of the first
option element in the select element's list of
options (if any) is the empty string, and that option
element's parent node is the select element (and not an
optgroup element), then that option is the select
element's placeholder label option.
Therefore, you can use
<select id="Category" name="Category" required>
<option value="" selected disabled>Category</option>
<option value="1">General Info</option>
<option value="2">Booking</option>
<option value="3">Auditions</option>
</select>
When the user click on any option, he can´t return the first one back. But he can submit form without change, then you need to validate via JS.
It's quite simple,
function validate() {
var select = document.getElementById('Category');
return !select.value == 0;
}
And the form in HTML:
<form onsubmit="return validate()">...</form>
Will disabling select work for you?
<select id="Category" name="Category" disabled>
<option value="0" selected="selected">Category</option>
...
</select>
Or maybe disabling all but selected option will work for you (as shown here: https://stackoverflow.com/a/23428851/882073)
Ideally, you would simply remove the selected attribute from disabled options on the server side when generating the HTML document to begin with.
Otherwise, if you are using JQuery, this can be done fairly easily with:
$('#Category').find('option:not([disabled])').first().prop('selected', true);
Add this to your ondomready event handler. This will force the first non-disabled option to be selected for this select element regardless of its options' selected attributes. The disadvantage of this method is that it will prevent the selected attribute from being able to be used at all with this select element.
On the other hand, if you are trying to create category headers within a select element, you should consider using an optgroup element instead, since that is the correct semantic markup for this:
<select id="Category" name="Category">
<optgroup label="Category">
<option value="1">General Info</option>
<option value="2">Booking</option>
<option value="3">Auditions</option>
</optgroup>
</select>

Can I apply the required attribute to <select> fields in HTML?

How can I check if a user has selected something from a <select> field in HTML?
I see <select> doesn't support the new required attribute... do I have to use JavaScript then? Or is there something I’m missing? :/
Mandatory: Have the first value empty - required works on empty values
Prerequisites: correct html5 DOCTYPE and a named input field
<select name="somename" required>
<option value="">Please select</option>
<option value="one">One</option>
</select>
As per the documentation (the listing and bold is mine)
The required attribute is a boolean
attribute.
When specified, the user
will be required to select a value
before submitting the form.
If a select element
has a required attribute specified,
does not have a multiple attribute specified,
and has a display size of 1 (do not have SIZE=2 or more - omit it if not needed);
and if the value
of the first option element in the
select element's list of options (if
any) is the empty string (i.e. present as value=""),
and that
option element's parent node is the
select element (and not an optgroup
element),
then that option is the
select element's placeholder label
option.
The <select> element does support the required attribute, as per the spec:
http://dev.w3.org/html5/spec-author-view/the-select-element.html#the-select-element
Which browser doesn’t honour this?
(Of course, you have to validate on the server anyway, as you can’t guarantee that users will have JavaScript enabled.)
Yes, it's working:
<select name="somename" required>
<option value="">Please select</option>
<option value="one">One</option>
</select>
you have to keep first option blank.
You can use the selected attribute for the option element to select a choice by default. You can use the required attribute for the select element to ensure that the user selects something.
In Javascript, you can check the selectedIndex property to get the index of the selected option, or you can check the value property to get the value of the selected option.
According to the HTML5 spec, selectedIndex "returns the index of the first selected item, if any, or −1 if there is no selected item. And value "returns the value of the first selected item, if any, or the empty string if there is no selected item." So if selectedIndex = -1, then you know they haven't selected anything.
<button type="button" onclick="displaySelection()">What did I pick?</button>
<script>
function displaySelection()
{
var mySelect = document.getElementById("someSelectElement");
var mySelection = mySelect.selectedIndex;
alert(mySelection);
}
</script>
You need to set the value attribute of option to the empty string:
<select name="status" required>
<option selected disabled value="">what's your status?</option>
<option value="code">coding</option>
<option value="sleep">sleeping</option>
</select>
select will return the value of the selected option to the server when the user presses submit on the form. An empty value is the same as an empty text input -> raising the required message.
w3schools
The value attribute specifies the value to be sent to a server when a form is submitted.
Example
<form action="">
<select required>
<option selected disabled value="">choose</option>
<option value="red">red</option>
<option value="yellow">yellow</option>
<option value="green">green</option>
<option value="grey">grey</option>
</select>
<input type="submit">
</form>
try this, this gonna work, I have tried this and this works.
<!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>
Make the value of first item of selection box to blank.
So when every you post the FORM you get blank value and using this way you would know that user hasn't selected anything from dropdown.
<select name="user_role" required>
<option value="">-Select-</option>
<option value="User">User</option>
<option value="Admin">Admin</option>
</select>
first you have to assign blank value in first option.
i.e. Select here.than only required will work.
Works perfectly fine if the first option's value is null. Explanation : The HTML5 will read a null value on button submit. If not null (value attribute), the selected value is assumed not to be null hence the validation would have worked i.e by checking if there's been data in the option tag. Therefore it will not produce the validation method. However, i guess the other side becomes clear, if the value attribute is set to null ie (value = "" ), HTML5 will detect an empty value on the first or rather the default selected option thus giving out the validation message. Thanks for asking. Happy to help. Glad to know if i did.
In html5 you can do using the full expression:
<select required="required">
I don't know why the short expression doesn't work, but try this one.
It will solve.
Try this
<select>
<option value="" style="display:none">Please select</option>
<option value="one">One</option>
</select>
You can do it also dynamically with JQuery
Set required
$("#select1").attr('required', 'required');
Remove required
$("#select1").removeAttr('required');

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