Angular - select placeholder not showing - html

is there any reason why this simple code won't work? I'm trying to have a placeholder on my select, but it simply shows as one of the other options in the list.
<div *ngFor="let d of formDatiRichiesta" class="form-row">
<select *ngIf="d.type=='select'"
class="form-control"
name="{{d.name}}"
[(ngModel)]="model[d.name]"
required>
<option selected disabled>{{d.placeholder}}</option>
<option *ngFor="let b of elencoBanche" value="{{b.id}}">{{b.denominazione}}</option>
</select>
</div>
I'm using angular4. Thanks.
--EDIT--
I found out that if I delete [(ngModel)]="model[d.name]" all works fine. Any hint?


You have to set the value of the <option> to the value of the model, because the <select> will use the value of the model as the default selection.
When the model is undefined at the beginning you can do it like this:
<option value="undefined">Please choose...</option>


That's how it is supposed to work. With the attributedisabled you can't choose it as an option.
But you could add the hidden attribute to also hide it:
<option value="" selected disabled hidden>{{d.placeholder}}</option>


<select formControlName="value" class="form-control"
style=" height: 40px">
<option [ngValue]="null" selected disabled hidden>Select</option>
<option>Save</option>
<option>Download</option>
</select>


Add this simply it will work.
<option value="" disabled>Select Category</option>
Or
<option [ngValue]="null">Select Category</option>

Related

How to add placeholder in the select tag in angular Typescript?

I'm trying to use a placeholder for dropdowns in the select tag, but the placeholder isn't working. Also, I tried some other options, but they didn't work.
<select class="form-control" [(ngModel)]="Category" required placeholder="Category">
<option value="" disabled selected>Select one category </option>
<option *ngFor="let data of array" [value]="data.Value">{{data.Name}}</option>
</select>
I have a select tag where I remove the [(ngModel)]="Category" properties and it shows the placeholder option, but when I add them it shows Blank in Placeholder.

In TS File declare your [(ngModel)] as null, it will work,
I have attached the stackblitz demo as well.
You can use an option with disabled.
In TS:
selected4 = null;
HTML
<select [(ngModel)]="selected4">
<option value="" disabled selected>Select your option</option>
<option value="1">Hey</option>
<option value="2">Hello</option>
</select>
stackblitz

how to set default value in select option when I have only two option?

here my code
<select class="form-control"
aria-placeholder="select auth type" id="auth_type"
[(ngModel)]="authenticationType"
name="auth_type"
#auth_type="ngModel"
(change)="changeAuthenticationType($event)" required>
<option [ngValue]="undefined" disabled selected>{{'AUTHENTICATION_CONFIGURATION.SELECT_TYPE' | translate}}
</option>
<option value="ALIGNOR_AUTHENTICATION">ALIGNOR AUTHENTICATION</option>
<option value="COGNITO_AUTHENTICATION">COGNITO AUTHENTICATION</option>
</select>

You have not done it by the recommended way of doing it.
Refer this demo code to see how it done. I would recommend to do it this way.
<select [(ngModel)]="selectedItem">
<option *ngFor="let item of items" [ngValue]="item">{{item.value}}</option>
</select>
You can make changes in your code accordingly.

In angular2 whenever list change it selects first element, so how to avoid it?

I am working on angular 9 and whenever list on which select it working is changed it selects first element by default. I am using materializecss for this. I tried jquery and compareWith but no use.
<select id="valueSelect"
data-[(ngModel)]="selectedValue"
[compareWith]="compareList"
data-(change)="fetchMetaData();">
<option value="" disabled selected>Choose value</option>
<option data-*ngFor="let element1 of filterList"
data-[ngValue]="bu.businessunitCode">{{element1.value}}</option>
</select>
<label>Select value</label>

may i show fetchMetaData() function ?
replace [ngValue] to [value] may be it will work fine !
<select id="valueSelect"
[(ngModel)]="selectedValue"
[compareWith]="compareList"
(change)="fetchMetaData();">
<option selected disabled>Choose value</option>
<option *ngFor="let data of fadeIn" [value]="data">{{data}}</option>
</select>

placeholder value for select not showing when using ngmodel

I am trying to have a select drop down display the first option as a placeholder value
The following code works
<form (ngSubmit)="citySubmit(f)" #f="ngForm">
<select>
<option value="" disabled selected>Select Your City</option>
<option *ngFor="let c of cities" [value]="c">{{c}}</option>
</select>
</form>
however the following code does not
<form (ngSubmit)="citySubmit(f)" #f="ngForm">
<select
[ngModel]="city">
<option value="" disabled selected>Select Your City</option>
<option *ngFor="let c of cities" [value]="c">{{c}}</option>
</select>
</form>
which leads me to believe I am using the ngmodel incorrectly.
Can I have some guidance please.

It should be,
Change
From
<select [ngModel]="city">
To
<select [(ngModel)]="city">

Bootstrap select dropdown list placeholder

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.