DDR爱好者之家

Angular 表单控件示例代码
站长资源 2024/11/27 佚名
44 1538
DDR爱好者之家 Design By 杰米

本文将介绍 Angular Template-driven 表单中，常用控件的使用。涉及的表单控件如下：

  1. text
  2. number
  3. radio
  4. select (基本类型)
  5. select (对象)
  6. multi select
  7. cascading select (级联操作)
  8. checkbox (boolean)
  9. multi checkbox

表单的局部效果

Angular 表单控件示例代码

数据接口

export interface User {
 name: string; // 名字
 age"htmlcode">



<div class="form-group">
  <label>名字</label>
  <input type="text" class="form-control" name="name" [(ngModel)]="user.name">
</div>






Number







<div class="form-group">
  <label>年龄</label>
  <input type="number" class="form-control" name="age" [(ngModel)]="user.age">
</div>






Radio




数据





genders = [{ value: 'F', display: '女' },{ value: 'M', display: '男' }];





模板





<div class="form-group">
  <label>性别</label>
   <label *ngFor="let gender of genders;">
   <input type="radio" name="gender" [(ngModel)]="user.gender" 
     [value]="gender.value">
      {{gender.display}}
 </label>
</div>





Select - 基本类型




数据


复制代码 代码如下:

roles = [{ value: 'admin', display: '管理员' },{ value: 'user', display: '普通用户' }];






模板





<div class="form-group">
 <label>角色</label>
 <select name="role" class="form-control" [(ngModel)]="user.role">
   <option *ngFor="let role of roles" [value]="role.value">
    {{role.display}}
  </option>
 </select>
</div>





Select - 对象




数据





themes: Theme[] = [
 { backgroundColor: 'black', fontColor: 'white', display: '黑色' },
 { backgroundColor: 'white', fontColor: 'black', display: '白色' },
 { backgroundColor: 'grey', fontColor: 'white', display: '灰色' }
];





模板





<div class="form-group">
 <label>主题</label>
 <select name="theme" class="form-control" [(ngModel)]="user.theme">
   <option *ngFor="let theme of themes" [ngValue]="theme">
     {{theme.display}}
   </option>
  </select>
</div>





Mulit Select




数据





topics = [
 { value: 'game', display: '游戏' },
 { value: 'tech', display: '科技' },
 { value: 'life', display: '生活' }
];





模板





<div class="form-group">
  <label>话题</label>
  <select multiple name="topics" class="form-control" [(ngModel)]="user.topics">
   <option *ngFor="let topic of topics" [value]="topic.value">
     {{topic.display}}
   </option>
  </select>
</div>






Cascading Select - 级联操作




数据





provinces = [
  {pk:1,pv:'北京'},
  {pk:16,pv:'福建'}
 ];

citieData = [
  {pk:1,ck:72,cv:'朝阳区'},{pk:1,ck:2800,cv:'海淀区'},
  {pk:1,ck:2801,cv:'西城区'},{pk: 16,ck: 1303,cv: '福州市'}, 
  {pk: 16,ck: 1315,cv: '厦门市'},{pk: 16,ck: 1332,cv: '泉州市'}
];

cities = this.citieData.filter(city => city.pk === 16); // 默认福建省






模板





<div class="form-group">
  <label>地址</label>
  <select name="province" class="form-control" [(ngModel)]="user.province" 
   (change)="changeProvince($event.target.value)">
     <option *ngFor="let province of provinces" [value]="province.pk">
       {{province.pv}}
     </option>
  </select>
  <select name="city" class="form-control" [(ngModel)]="user.city">
    <option *ngFor="let city of cities" [value]="city.ck">
     {{city.cv}}
    </option>
  </select>
</div>





Checkbox




模板





<div class="form-group">
  <div class="checkbox">
   <label>
    <input type="checkbox" name="isActive" [(ngModel)]="user.isActive">
      是否激活
   </label>
  </div>
</div>





Multi Checkbox




数据





hobbies = [
 { value: 'reading', display: '看书' },
 { value: 'music', display: '听歌' },
 { value: 'movie', display: '电影' }
];





模板





<div class="form-group">
  <label>爱好</label>
  <span *ngFor="let hobby of hobbies">
    <input type="checkbox" name="bobby" [value]="hobby.value" 
     [checked]="user.hobbies[hobby.value]"
     (change)="changeHobby(hobby, $event)" />
       {{hobby.display}}
  </span>
</div>






完整示例




模板







<h4>{{title}}</h4>
<form #f="ngForm" novalidate>
   <div class="form-group">
    <label>名字</label>
    <input type="text" class="form-control" name="name" [(ngModel)]="user.name">
   </div>
   <div class="form-group">
    <label>年龄</label>
    <input type="number" class="form-control" name="age" [(ngModel)]="user.age">
   </div>
   <div class="form-group">
    <label>性别</label>
    <label *ngFor="let gender of genders;">
     <input type="radio" name="gender" [(ngModel)]="user.gender" 
      [value]="gender.value">
      {{gender.display}}
    </label>
   </div>
   <div class="form-group">
    <label>角色</label>
    <select name="role" class="form-control" [(ngModel)]="user.role">
     <option *ngFor="let role of roles" [value]="role.value">
      {{role.display}}</option>
    </select>
   </div>
   <div class="form-group">
    <label>主题</label>
    <select name="theme" class="form-control" [(ngModel)]="user.theme">
     <option *ngFor="let theme of themes" [ngValue]="theme">
      {{theme.display}}
     </option>
    </select>
   </div>
   <div class="form-group">
    <div class="checkbox">
     <label>
      <input type="checkbox" name="isActive" [(ngModel)]="user.isActive">
      是否激活
     </label>
    </div>
   </div>
   <div class="form-group">
    <label>话题</label>
    <select multiple name="topics" class="form-control" [(ngModel)]="user.topics">
     <option *ngFor="let topic of topics" [value]="topic.value">
      {{topic.display}}
     </option>
    </select>
   </div>
   <div class="form-group">
    <label>爱好</label>
    <span *ngFor="let hobby of hobbies">
      <input type="checkbox" name="bobby" [value]="hobby.value" 
          [checked]="user.hobbies[hobby.value]"
       (change)="changeHobby(hobby, $event)" />
      {{hobby.display}}
    </span>
   </div>
   <div class="form-group">
    <label>地址</label>
    <select name="province" class="form-control" [(ngModel)]="user.province" 
     (change)="changeProvince($event.target.value)">
     <option *ngFor="let province of provinces" [value]="province.pk">
      {{province.pv}}
     </option>
    </select>
    <select name="city" class="form-control" [(ngModel)]="user.city">
     <option *ngFor="let city of cities" [value]="city.ck">{{city.cv}}</option>
    </select>
   </div>
   <button type="submit" (click)="save()" class="btn btn-default">保存</button>
</form>






组件类







export class AppComponent implements OnInit {
 title = '新增用户';
 user: User;

 genders = [{ value: 'F', display: '女' },{ value: 'M', display: '男' }];

 roles = [{ value: 'admin', display: '管理员' },{ value: 'user', display: '普通用户' }];

 themes: Theme[] = [
  { backgroundColor: 'black', fontColor: 'white', display: '黑色' },
  { backgroundColor: 'white', fontColor: 'black', display: '白色' },
  { backgroundColor: 'grey', fontColor: 'white', display: '灰色' }
 ];

 topics = [
  { value: 'game', display: '游戏' },
  { value: 'tech', display: '科技' },
  { value: 'life', display: '生活' }
 ];

 hobbies = [
  { value: 'reading', display: '看书' },
  { value: 'music', display: '听歌' },
  { value: 'movie', display: '电影' }
 ];

 provinces = [
  {pk:1,pv:'北京'},
  {pk:16,pv:'福建'}
 ];

 citieData = [
  {pk:1,ck:72,cv:'朝阳区'},{pk:1,ck:2800,cv:'海淀区'},
  {pk:1,ck:2801,cv:'西城区'},{pk: 16,ck: 1303,cv: '福州市'}, 
  {pk: 16,ck: 1315,cv: '厦门市'},{pk: 16,ck: 1332,cv: '泉州市'}
 ];

 cities = this.citieData.filter(city => city.pk === 16);

 changeHobby(hobby, event) {
  this.user.hobbies[hobby.value] = event.target.checked;
 }

 changeProvince(pk) {
  this.cities = this.citieData.filter((city)=> city.pk == pk);
  this.user.city = this.cities[0].ck;
 }

 ngOnInit(): void {
  this.user = {
   name: '',
   gender: this.genders[0].value,
   role: this.roles[1].value,
   theme: this.themes[0],
   isActive: false,
   hobbies: {'music': true},
   topics: [this.topics[1].value],
   province: 16, // 福建省
   city: 1315 // 厦门市
  }
 }

  save() {
  console.log(this.user);
 }
}







以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
DDR爱好者之家 Design By 杰米
广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除！
DDR爱好者之家 Design By 杰米
ddrfans.com DDR爱好者之家
8,675无损音乐
1,324高清电影
213破解软件
70,141收录资讯

更新日志

友情链接

杰晶网络 DDR爱好者之家 南强小屋 黑松山资源网 白云城资源网
DDR爱好者之家 Design By 杰米