【发布时间】:2021-07-07 16:30:09
【问题描述】:
我目前正在开发一个 Angular 项目,该项目创建了一堆动态组件,我希望每个组件都有不同的颜色,这取决于它在初始化时调用服务的结果。组件代码如下:
@Component({
selector: 'app-step',
templateUrl: './step.component.html',
styleUrls: ['./step.component.css'],
providers: [DisplayService, MessageService]
})
export class StepComponent implements OnInit {
//a bunch of other functions and a constructor
findSolutions(defect: Defect): void {
//this is where I make the call to the service
this.defectService.getSolutions(defect, this.displayService).subscribe(solutions => {
if(solutions[0] === undefined) {
//HERE I want to change the back-ground color of .boxed (element
//in the style file) to yellow
}
else if(solutions !== undefined) {
//HERE I want to change the back-ground color of .boxed to green
}
});
}
ngOnInit(): void {
this.findSolutions(this.defect);
}
}
谁能帮我弄清楚如何使用 HostBinding?
【问题讨论】:
-
为什么不使用 NgClass 来添加或删除依赖于组件属性 bool 或 value 的类?
-
@DarrenStreet 哦,是的,那行得通。如果你想提交它作为答案,我会给它支票,这样你就可以获得它的声誉lol
标签: html css angular typescript angular2-hostbinding