GitHub | Stackblitz demo

Important Note

This directive was built just for personal use (I used it mainly to try out a new @angular/cli feature: ng generate library).

By 'personal' I mean there isn't any unit tests. So if you decide to use it, it's at your own risk. Also, if you would like to contribute, go to github repo and submit a PR.

If you want more info on how to build an angular library with @angular/cli, take a look at this great article.

Input Time Mask

This is an @angular directive to turn a text input into a simple time input. The improvement of this directive over the default <input type="time"> is the fact that the input will have the same looking accross browsers. There's no graphical interface: this is just a directive to impose a time mask (HH:mm) on a regular html <input>.

Getting Started

You can see a demo at stackblitz.

npm i @julianobrasil/timemask --save

In the @NgModule where it will be used (usually app.module.ts for an application wide installation):

  import {JpTimeMaskModule} from '@julianobrasil/timemask';
  
  ...

  imports: [...,JpTimeMaskModule,...]

Currently it works with Moment.js only and you can use it with template-driven or reactive forms like this:

<input jpTimeMask [formControl]="inputCtrl">

<input jpTimeMask [(ngModel)]="value">

inputCtrl = new FormControl(moment());
value = moment();

Value changes strategies

There are two value change strategies: eager and lazy. The lazy is the default one and it means that the Control will register any change in its value just when the input loose focus or the user press ENTER. In the eager mode, the input register changes as the user types in a new time. The change strategy can be switched by the jpTimeMaskChangeLazy attribute:

<!-- This sets the change strategy to eager --> 
<input jpTimeMask [jpTimeMaskChangeLazy]="false" [formControl]="inputCtrl">

UTC

If you want the component to work internally with UTC time, just set the useUtc input to ' true' (the default value is false):

<!-- This sets the underlying moment object to work with Utc --> 
<input jpTimeMask [useUtc]="true" [formControl]="inputCtrl">

Known Caveats

This directive doesn't prevent/support the use of value attribute on the input.