@angular-material-extensions/password-strength - Material password strength meter to indicate how secure is the provided password - Angular V12 supported incl. schematics

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Table of Contents

• Demo
• Components
• Dependencies
• Installation
• API
• Usage
• Run Demo App Locally
• Development
• Other Angular Libraries
• Support
• License

Demo

View all the directives and components in action at https://angular-material-extensions.github.io/password-strength

Library's components

• <mat-password-strength> used to calculate and display the strength of a provided password

1. strength score <= 20%

2. strength score <= 80%

1. strength score > 80%

• <mat-password-strength-info> used to display more information about the strength of a provided password

• <mat-pass-toggle-visibility> used to show/hide the password provided in the input element

---

Dependencies

• Angular developed and tested with 12.x

---

Installation

1. Install via ng add. (Recommended)

If Angular Material Design is not setup, just run ng add @angular/material learn more

Now add the library via the angular schematics

ng add @angular-material-extensions/password-strength

2. Install via npm. (Alternative)

Now install @angular-material-extensions/password-strength via:

npm install --save @angular-material-extensions/password-strength

---

SystemJS

Note:If you are using SystemJS, you should adjust your configuration to point to the UMD bundle. In your systemjs config file, map needs to tell the System loader where to look for @angular-material-extensions/password-strength:

{
  '@angular-material-extensions/password-strength';: 'node_modules/@angular-material-extensions/password-strength/bundles/password-strength.umd.js',
}

-> follow the instructions here

---

Import the library

Once installed you need to import the main module:

import { MatPasswordStrengthModule } from "@angular-material-extensions/password-strength";

The only remaining part is to list the imported module in your application module. The exact method will be slightly different for the root (top-level) module for which you should end up with the code similar to (notice MatPasswordStrengthModule .forRoot()):

import { MatPasswordStrengthModule } from '@angular-material-extensions/password-strength';

@NgModule({
  declarations: [AppComponent, ...],
  imports: [MatPasswordStrengthModule.forRoot(), ...],
  bootstrap: [AppComponent]
})
export class AppModule {
}

Other modules in your application can simply import MatPasswordStrengthModule:

import { MatPasswordStrengthModule } from '@angular-material-extensions/password-strength';

@NgModule({
  declarations: [OtherComponent, ...],
  imports: [MatPasswordStrengthModule, ...],
})
export class OtherModule {
}

API

<mat-password-strength> used to calculate and display the strength of a provided password - see the demo examples

option	bind	type	default	description
password	Input()	string	-	the password to calculate its strength
customValidator	Input()	RegExp	-	custom regex validator
externalError	Input()	boolean	false	used to change the color of the password to warn if an external error occurs
enableLengthRule	Input()	boolean	true	whether to validate the length of the password
enableLowerCaseLetterRule	Input()	boolean	true	whether a lowercase letter is optional
enableUpperCaseLetterRule	Input()	boolean	true	whether a uppercase letter is optional
enableDigitRule	Input()	boolean	true	whether a digit char is optional
enableSpecialCharRule	Input()	boolean	true	whether a special char is optional
min	Input()	number	8	the minimum length of the password
max	Input()	number	30	the maximum length of the password
warnThreshold	Input()	number	21	password strength less than this number shows the warn color
accentThreshold	Input()	number	81	password strength less than this number shows the accent color
onStrengthChanged	Output()	number	-	emits the strength of the provided password in % e.g: 20%, 40%, 60%, 80% or 100%

<mat-password-strength-info> used to display more information about the strength of a provided password - see the demo examples

option	bind	type	default	description
passwordComponent	Input()	PasswordStrengthComponent	-	the password component used in the template in order to display more info related to the provided password
enableScoreInfo	Input()	boolean	false	whether to show the password's score in %
lowerCaseCriteriaMsg	Input()	string	contains at least one lower character	an appropriate msg for the lower case %
upperCaseCriteriaMsg	Input()	string	contains at least one upper character	an appropriate msg for the upper case %
digitsCriteriaMsg	Input()	string	contains at least one digit character	an appropriate msg for the digit case %
specialCharsCriteriaMsg	Input()	string	contains at least one special character	an appropriate msg for the special case %
customCharsCriteriaMsg	Input()	string	contains at least one custom character	an appropriate msg for the custom validator case %
minCharsCriteriaMsg	Input()	string	contains at least ${this.passwordComponent.min} characters	an appropriate msg for the minimum number of chars %

<mat-pass-toggle-visibility> used to show/hide the password provided in the input element

option	bind	type	default	description
isVisible	Input()	boolean	false	whether the password is visible or hidden
tabindex	Input()	string	null	set the desired tabindex value of the toggle visibility button.

---

Usage

add the @angular-material-extensions/password-strength element to your template:

<mat-password-strength [password]="password.value"> </mat-password-strength>

This will display only the material password strength meter in form of a progress without any input fields or similar.

In the following example, we integration a material input container with @angular-material-extensions/password-strength 's component.

NOTE: In order to repaint the mat-form-field correctly after changing the value of the password's strength, please consider to change the detection strategy for the parent component -->

import {
  ChangeDetectionStrategy,
  Component,
  OnInit,
  ViewEncapsulation,
} from "@angular/core";
import { Title } from "@angular/platform-browser";
import { MatSlideToggleChange } from "@angular/material";
import { MatPasswordStrengthComponent } from "@angular-material-extensions/password-strength";

@Component({
  selector: "app-home",
  templateUrl: "./home.component.html",
  styleUrls: ["./home.component.scss"],
  encapsulation: ViewEncapsulation.None,
  changeDetection: ChangeDetectionStrategy.OnPush,
})
export class HomeComponent implements OnInit {}

<div>
  <mat-form-field
    appearance="outline"
    style="width: 100%"
    [color]="passwordComponent.color"
  >
    <mat-label>Password</mat-label>
    <input
      matInput
      #password
      [type]="inputType"
      required
      placeholder="Password"
    />
    <mat-hint align="end" aria-live="polite">
      {{password.value.length}} / 25
    </mat-hint>
  </mat-form-field>

  <mat-password-strength
    #passwordComponent
    (onStrengthChanged)="onStrengthChanged($event)"
    [password]="password.value"
  >
  </mat-password-strength>
</div>

learn more about mat-form-field

Example of how to use the emitted strength of the password in your template

<div fxLayout="row" fxLayoutGap="10px">
  <div *ngIf="passwordComponent.strength === 100; then done else error"></div>
  <ng-template #done>
    <mat-icon color="primary">done</mat-icon>
  </ng-template>
  <ng-template #error>
    <mat-icon color="warn">error</mat-icon>
  </ng-template>
  <div>
    <p>Password's strength = {{passwordComponent.strength}} %100</p>
  </div>
</div>

Use the toggle visibility component

• add the mat-pass-toggle-visibility to your mat-form-field
• give it a name to use it in the html file like toggle
• set the type of the input to that value emitted from the mat-pass-toggle-visibility component <input matInput [type]="toggle.type"/>

<mat-form-field
  appearance="outline"
  style="width: 100%"
  [color]="passwordComponent.color"
>
  <mat-label>Password</mat-label>
  <!-- HERE DOWN :D-->
  <mat-pass-toggle-visibility #toggle matSuffix></mat-pass-toggle-visibility>
  <!-- THERE ABOVE ;)-->
  <input
    matInput
    #password
    [type]="toggle.type"
    required
    placeholder="Password"
  />
  <mat-hint align="end" aria-live="polite">
    {{password.value.length}} / 25
  </mat-hint>
</mat-form-field>

Client Side password's validation using a built in angular formController

1. add an input element to your template with an appropriate @angular-material-extensions/password-strength's component
2. hold a reference of the @angular-material-extensions/password-strength's component by adding passwordComponentWithValidation (or whatever you want) inside the element

e.g:

<mat-password-strength
  #passwordComponentWithValidation
  [password]="passwordWithValidation.value"
>
</mat-password-strength>

3. bind the form controller of the mat-password-strength to the input element

• you can access the form controller of @angular-material-extensions/password-strength using the chile view --> passwordComponentWithValidation.passwordFormControl
• bind the form controller to an input element --> [formControl]="passwordComponentWithValidation.passwordFormControl"

4. Full example - see below

<div>
  <mat-form-field appearance="outline" style="width: 100%">
    <mat-label>Password</mat-label>
    <input
      matInput
      #passwordWithValidation
      [type]="inputType"
      required
      [formControl]="passwordComponentWithValidation.passwordFormControl"
      placeholder="Password"
    />
    <mat-hint align="end" aria-live="polite">
      {{passwordWithValidation.value.length}} / 25
    </mat-hint>
    <mat-error
      *ngIf="passwordComponentWithValidation.passwordFormControl.hasError('required')"
    >
      Password is required
    </mat-error>
    <mat-error
      *ngIf="passwordComponentWithValidation.passwordFormControl.hasError('pattern')"
    >
      Password is not valid
    </mat-error>
  </mat-form-field>
  <mat-password-strength
    #passwordComponentWithValidation
    (onStrengthChanged)="onStrengthChanged($event)"
    [password]="passwordWithValidation.value"
  >
  </mat-password-strength>
  <!--Password's strength info-->
  <mat-password-strength-info
    [passwordComponent]="passwordComponentWithValidation"
  >
  </mat-password-strength-info>
</div>

this will looks like -->

---

custom regex validation

please consider to use the customValidator input (see below)

<mat-slide-toggle #toggle>Show Password Details</mat-slide-toggle>

<mat-form-field
  appearance="outline"
  style="width: 100%"
  [color]="passwordComponent.color"
>
  <mat-label>Password</mat-label>
  <mat-pass-toggle-visibility
    #toggleVisbility
    matSuffix
  ></mat-pass-toggle-visibility>
  <input
    matInput
    #password
    [type]="toggleVisbility.type"
    placeholder="Password"
  />
  <mat-hint align="end" aria-live="polite">
    {{password.value.length}} / {{passwordComponent.max}}
  </mat-hint>
</mat-form-field>

<mat-password-strength
  #passwordComponent
  (onStrengthChanged)="onStrengthChanged($event)"
  [password]="password.value"
  [customValidator]="pattern"
>
</mat-password-strength>

<mat-password-strength-info
  *ngIf="toggle.checked"
  [passwordComponent]="passwordComponent6"
  customCharsCriteriaMsg="1 german special chars is required"
  [enableScoreInfo]="true"
>
</mat-password-strength-info>

pattern = new RegExp(/^(?=.*?[äöüÄÖÜß])/);

Confirm the password with built in angular form controllers - see the live example

Use always the green color for a strong password just by adding the green css class to the mat-password-strength

<mat-password-strength
  #passwordComponent
  class="green"
  [password]="password.value"
>
</mat-password-strength>

Supporting custom messages and ngx-translate for the info component please check the example demo here

for more examples please visit this URL : [(https://angular-material-extensions.github.io/password-strength/examples]((https://angular-material-extensions.github.io/password-strength/examples)

Please checkout the full documentation here or follow the official tutorial

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Run Demo App Locally

Development

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• @angular-material-extensions/fab-menu
• @angular-material-extensions/link-preview
• @angular-material-extensions/pages
• @angular-material-extensions/contacts
• @angular-material-extensions/faq
• @angular-material-extensions/combination-generator

---

Support

• Drop an email to: Anthony Nahas
• or open an appropriate issue
• let us chat on Gitter

Built by and for developers ❤️ we will help you 👊

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This project is supported by jetbrains with 1 ALL PRODUCTS PACK OS LICENSE incl. webstorm

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License

Copyright (c) 2019-2021 Anthony Nahas. Licensed under the MIT License (MIT)