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
扩展MostafaMashayekhi对选项二的答案> 你也可以用一个'，'连接多个选项
[ngClass]="{'my-class': step=='step1', 'my-class2':step=='step2' }"
此外，*ngIf也可以在某些情况下使用，通常与*ngFor结合使用
class="mats p" *ngIf="mat=='painted'"
其他回答
这对我来说很管用:
[ngClass]="{'active': dashboardComponent.selected_menu == 'profile'}"
<div class="collapse in " [ngClass]="(active_tab=='assignservice' || active_tab=='manage')?'show':''" id="collapseExampleOrganization" aria-expanded="true" style=""> <ul> <li class="nav-item" [ngClass]="{'active': active_tab=='manage'}"> <a routerLink="/main/organization/manage" (click)="activemenu('manage')"> <i class="la la-building-o"></i> <p>Manage</p></a></li> <li class="nav-item" [ngClass]="{'active': active_tab=='assignservice'}"><a routerLink="/main/organization/assignservice" (click)="activemenu('assignservice')"><i class="la la-user"></i><p>Add organization</p></a></li> </ul></div>
代码是ngClass if else条件的好例子。
[ngClass]="(active_tab=='assignservice' || active_tab=='manage')?'show':''"
[ngClass]="{'active': active_tab=='assignservice'}"
如果用户想显示基于&&和||的类 下面是我的工作
[ngClass]="{'clasname_1': condition_1 && condition_2, 'classname_2': condition_1 && condition2, 'classname_3': condition}"
例子:
[ngClass]="{'approval-panel-mat-drawer-side-left': similar_toil_mode==='side' && showsTheSimilarToilsWithCloseIcon, 'approval-panel-mat-drawer-side-right': similar_toil_mode==='side' && !showsTheSimilarToilsWithCloseIcon, 'approval-panel-mat-drawer-over': similar_toil_mode==='over'}"
此外，您可以添加与方法函数:
在HTML中
<div [ngClass]="setClasses()">...</div>
在component.ts
// Set Dynamic Classes
setClasses() {
let classes = {
constantClass: true,
'conditional-class': this.item.id === 1
}
return classes;
}
让，YourCondition是你的条件或布尔属性，然后像这样做
[class.yourClass]="YourCondition"
