App2 - Databinding

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import {MatInputModule} from '@angular/material/input';
import {MatButtonModule} from '@angular/material/button';
import {BrowserAnimationsModule} from '@angular/platform-browser/animations';
import {MatCardModule} from '@angular/material/card';

import { AppComponent } from './app.component';
import { UserformComponent } from './userform/userform.component';

@NgModule({
  declarations: [
    AppComponent,
    UserformComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    MatInputModule,
    MatButtonModule,
    MatCardModule,
    BrowserAnimationsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

package.json

{
  "name": "my-first-app",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^6.0.9",
    "@angular/cdk": "^6.4.0",
    "@angular/common": "^6.0.0",
    "@angular/compiler": "^6.0.0",
    "@angular/core": "^6.0.0",
    "@angular/forms": "^6.0.0",
    "@angular/http": "^6.0.0",
    "@angular/material": "^6.4.0",
    "@angular/platform-browser": "^6.0.0",
    "@angular/platform-browser-dynamic": "^6.0.0",
    "@angular/router": "^6.0.0",
    "bootstrap": "3.3.7",
    "core-js": "^2.5.4",
    "rxjs": "^6.0.0",
    "rxjs-compat": "^6.1.0",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular/compiler-cli": "^6.0.0",
    "@angular-devkit/build-angular": "~0.6.0",
    "typescript": "~2.7.2",
    "@angular/cli": "~6.0.0",
    "@angular/language-service": "^6.0.0",
    "@types/jasmine": "~2.8.6",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.2.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~1.7.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~1.4.2",
    "karma-jasmine": "~1.1.1",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.3.0",
    "ts-node": "~5.0.1",
    "tslint": "~5.9.1"
  }
}

styles.css

@import "~@angular/material/prebuilt-themes/indigo-pink.css";
body {
  font-family: 'Roboto';
  background-color: #CCC;
}

userform.component.css

.main-card {
  margin: 100px;
  padding: 50px;
  width: 600px;
  height: 500px;
  border: 2px groove black;
  background: linear-gradient(#ff4081, #3f51b5);
  color: white;
}

.header {
  margin: 0px !important;
}

.footer {
  font-type: small;
  font-style: italic;
}

.mat-card-subtitle {
  color: #F5F5F5;
}

userform.component.html

<mat-card class='main-card'>
  <mat-card-header>
    <h2>Userform</h2>
  </mat-card-header>
  <mat-card-subtitle>
    <p>Implementation of 2-way binding, string Interpolation, property binding and event handling</p>
  </mat-card-subtitle>
  <mat-card-content>
    <mat-form-field>
      <input matInput [(ngModel)]="UserName" (keyup)="onChangeCheckLength()" placeholder="UserName" />
    </mat-form-field>
    <p>User name entered above is: {{UserName}}</p>
  </mat-card-content>
  <mat-card-actions>
    <button mat-raised-button (click)="onClickReset()" [disabled]="Inactive" color='accent'>CLEAR</button>
  </mat-card-actions>
  <mat-card-footer>
    <p class='footer'>App 2: Databinding practice</p>
  </mat-card-footer>
</mat-card>

userform.component.ts

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

@Component({
      selector: 'app-userform',
      templateUrl: './userform.component.html',
      styleUrls: ['./userform.component.css']
})
export class UserformComponent implements OnInit {
      UserName :string = '';
      Inactive :boolean = true;
      constructor() { }

      ngOnInit() {
      }
      onClickReset(){
            this.UserName = '';
            this.Inactive = true;
      }
      onChangeCheckLength(){
            this.UserName.length > 0? this.Inactive = false: this.Inactive = true;
      }
}