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[Angular2 Form] Create Radio Buttons for Angular 2 Forms

2024-08-15 04:43:18   219人阅读

Using Radio Buttons in Angular 2 requires a basic understanding of forms as well as how their labels will match up with each input. This lesson shows how to use *ngFor with radio buttons and covers the quirks of the id property and forattributes as well as how to style validation of radio buttons.

 

  <!-- Radio button-->  <form action="" name="myFom4" #myForm4="ngForm">    <div *ngFor="let location of locations">      <input type="radio"             name="location"             ngModel             [value]="location"             [id]="location"             required      >      <label [attr.for]="location">{{location}}</label>    </div>  </form>  <pre>    {{myForm4.value | json}}  </pre>

 

input.ng-invalid + label:after {  content: ‘<--Requried to selet one‘}

 

import {Component, OnInit} from ‘@angular/core‘;@Component({  selector: ‘app-message‘,  templateUrl: ‘./message.component.html‘,  styleUrls: [‘./message.component.css‘]})export class MessageComponent implements OnInit {  locations: Array<string>;  constructor() {  }  ngOnInit() {    this.locations = [      ‘China‘,      ‘Finland‘,      ‘Norway‘,      ‘Japan‘    ];  }}

 

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[Angular2 Form] Create Radio Buttons for Angular 2 Forms


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