How to install the Add to Calendar Button with Angular

Step 1: npm installation

Install the package from the npm registry.

npm install add-to-calendar-button

Step 2: Import it

Import the module into the component, where you want to use the button.

import 'add-to-calendar-button';

Step 3: Optimize the Angular config

To make Angular work properly with the Web Component, you need to import the CUSTOM_ELEMENTS_SCHEMA and update the @NgModule/@Component block respectively.

Option A: Standalone component (recommended)

// app.component.ts

import { Component, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';

@Component({
  //(...),
  standalone: true,
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
})
export class AppComponent {}

Option B: NgModule-based application

// app.module.ts

import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
//(...)

@NgModule({
  //(...),
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
})
//(...)

Step 4: Use it

Start using it by adding a <add-to-calendar-button> tag to your HTML source code - with the options as attributes.

Yes, it is that simple.

Your code block could look like the following.

<add-to-calendar-button
  name="Title"
  options="'apple','google'"
  location="World Wide Web"
  start-date="2026-10-03"
  end-date="2026-10-03"
  start-time="10:15"
  end-time="23:30"
  time-zone="EST"
></add-to-calendar-button>

Proper bindings

To bind data to a specific attribute, you need to use the syntax [attr.PARAMETER]="your data".

Based on your setup, the data flow might happen after the first rendering of the button. This is no problem, but you might see errors in the console when in debug mode, claiming there is data missing. Mind that due to this reason, binding the "identifier" option would not work.

<add-to-calendar-button
  [attr.name]="titleVar"
  options="'apple','google'"
  [attr.start-date]="dateVar"
></add-to-calendar-button>

Styles & languages

The script ships with the "default" button style and the English language pack built in - so the button looks great and works out of the box without any extra configuration.

When you load the browser script directly, every other style and language loads automatically on demand (a few KB each). Bundled integrations should register the required modules explicitly as shown below.

Bundling via npm (recommended for frameworks)

When you bundle the script, import the style and language modules you need before the main module. This registers them fetch-free before the custom element upgrades, including during SSR hydration:

import 'add-to-calendar-button/styles/3d';   // any style besides "default"
import 'add-to-calendar-button/i18n/de';       // any language besides English
import 'add-to-calendar-button';             // load the component last

To load all styles or all languages in one statement, use the aggregate modules: import 'add-to-calendar-button/styles/all' and import 'add-to-calendar-button/i18n/all'.

See the "button-style" and "language" options at the Configuration page for the full picture.