我的Angular代码出了什么问题?我得到以下错误:
无法读取BrowserDomAdapter.removeClass中未定义的属性“remove”
<ol>
<li *ngClass="{active: step==='step1'}" (click)="step='step1'">Step1</li>
<li *ngClass="{active: step==='step2'}" (click)="step='step2'">Step2</li>
<li *ngClass="{active: step==='step3'}" (click)="step='step3'">Step3</li>
</ol>
当前回答
ngClass让:
[ngClass]="{'classname' : conditionFlag}"
你可以这样用:
<ol class="breadcrumb">
<li [ngClass]="{'active': step==='step1'}" (click)="step='step1'">Step1</li>
<li [ngClass]="{'active': step==='step2'}" (click)="step='step2'">Step2</li>
<li [ngClass]="{'active': step==='step3'}" (click)="step='step3'">Step3</li>
</ol>
其他回答
这对我来说很管用:
[ngClass]="{'active': dashboardComponent.selected_menu == 'profile'}"
另一个解决方案是使用[class.active]。
例子:
<ol class="breadcrumb">
<li [class.active]="step=='step1'" (click)="step='step1'">Step1</li>
</ol>
这个例子有点大，但是触发一个类而不是输入内联是我首选的方法。 通过这种方式，您可以在元素中添加尽可能多的可能性。 对于那些想要将多个[ngClass]绑定到单个元素的人来说，可能有一种方法。
<span class="inline-flex items-center font-medium" [ngClass]="addClass">{{ badge.text }}</span>
import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
type Badge = {
size?: 'basic' | 'large';
shape?: 'basic' | 'rounded';
color?: 'gray' | 'red' | 'yellow' | 'green' | 'blue' | 'indigo' | 'purple' | 'pink';
dot?: boolean;
removeButton?: false;
text?: string;
}
@Component({
selector: 'bio-badge',
templateUrl: './badge.component.html',
styleUrls: ['./badge.component.scss'],
changeDetection: ChangeDetectionStrategy.OnPush,
})
export class BioBadgeComponent {
@Input() badge!: Badge;
get addClass() {
return {
'px-2.5 py-0.5 text-sx': this.badge.size === 'basic',
'px-3 py-0.5 text-sm': this.badge.size === 'large',
'rounded-full': this.badge.shape === 'basic',
'rounded': this.badge.shape === 'rounded',
'bg-gray-100 text-gray-800': this.badge.color === 'gray',
'bg-red-100 text-red-800': this.badge.color === 'red',
'bg-yellow-100 text-yellow-800': this.badge.color === 'yellow',
'bg-green-100 text-green-800': this.badge.color === 'green',
'bg-blue-100 text-blue-800': this.badge.color === 'blue',
'bg-indigo-100 text-indigo-800': this.badge.color === 'indigo',
'bg-purple-100 text-purple-800': this.badge.color === 'purple',
'bg-pink-100 text-pink-800': this.badge.color === 'pink',
}
}
}
让，YourCondition是你的条件或布尔属性，然后像这样做
[class.yourClass]="YourCondition"
ngClass让:
[ngClass]="{'classname' : conditionFlag}"
你可以这样用:
<ol class="breadcrumb">
<li [ngClass]="{'active': step==='step1'}" (click)="step='step1'">Step1</li>
<li [ngClass]="{'active': step==='step2'}" (click)="step='step2'">Step2</li>
<li [ngClass]="{'active': step==='step3'}" (click)="step='step3'">Step3</li>
</ol>
