material Select 下拉按钮（web版）
效果动态图：
1.gif
htmtl
<mat-form-field>
<mat-select placeholder="Favorite food">
<mat-option *ngFor="let food of foods" [value]="food.value">
{{food.viewValue}}
</mat-option>
</mat-select>
</mat-form-field>
ts
import {Component} from '@angular/core';
export interface Food {
value: string;
viewValue: string;
}
/**
* @title Basic select
*/
@Component({
selector: 'select-overview-example',
templateUrl: 'select-overview-example.html',
styleUrls: ['select-overview-example.css'],
})
export class SelectOverviewExample {
foods: Food[] = [
{value: 'steak-0', viewValue: 'Steak'},
{value: 'pizza-1', viewValue: 'Pizza'},
{value: 'tacos-2', viewValue: 'Tacos'}
];
}
