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This an Angular 2 implementation of AngularJS Directive to test the strength of a password.

Try it live!

Install in your project

npm install ng2-password-strength-bar --save

1.1.x Version Update Note

If you upgrade from v1.0.x to v1.1.x you will need to change the PasswordStrengthBar import. There are two options:

  1. Change to PasswordStrengthBarModule and add this to the imports section of the @NgModule metadata instead of the declarations (shown below), or
  2. Change to PasswordStrengthBarComponent and update the name in the declarations section to match.

Using the Component

Add Component to Module imports

import { PasswordStrengthBarModule } from 'ng2-password-strength-bar';
   declarations: [
    imports: [
export class AppModule {}

Add Component to your Application

    selector: 'my-app',
    template: `
  <h3>Angular 2 Password Strength Bar</h3>
       <form name="myForm" novalidate>
            <input type="password" class="form-control" id="password" name="password" placeholder="Enter password"
                 [(ngModel)]="account.password" #password="ngModel"
                 minlength="5" maxlength="50" required>
export class App {
    public account = {
        password: <string>null
    public barLabel: string = "Password strength:";
    // ...

Input Parameters

<ng2-password-strength-bar [passwordToCheck]="account.password" [barLabel]="barLabel"> </ng2-password-strength-bar>

passwordToCheck (type: string)

  • The variable containing the password to check.

barLabel (type: string)

  • The variable containing the label displayed to the left of the bar.

Run the example application locally

  • git clone
  • cd ng2-password-strength-bar
  • npm install
  • npm start # Browser should open automatically on http://localhost:3000

Run the tests locally

  • Same as above, except for the last step do:
  • npm run test-once # Defaults to a Firefox browser