Can we dynamically set a value in an scss file from the ts component like demonstrated below?
public display: "none" | "block";
ngOnInit(): void {
this.display = "none";
}
::ng-deep #clear {
display: {{display}} !important;
}
The ID clear is within a component that was sourced from a library installed via npm.
It's not feasible to do it that way; however, you could incorporate CSS in the following manner:
<div id="reset" [style.display]="display ? 'block': 'none'">
....
</div>
If you can imagine wanting to change the theme of your template from light mode to dark after clicking on a button, you will need to ensure that all components in your template also switch themes accordingly. One approach is to create an Angular service and update the property isDarkMode upon button click. You can then subscribe to this property in each component as shown below:
in theme.service.ts
private _isDarkMode = new Subject<boolean>();
isDarkMode = this._isDarkMode.asObservable();
setDarkTheme(isDarkTheme: boolean): void {
this._darkTheme.next(isDarkTheme);
}
in test.component.ts
ngOnInit(): void {
this.isDarkMode = this.themeService.isDarkMode
}
in test.component.html
<div [ngClass]="{'test-dark-mode': isDarkMode }"></div>
To streamline this process, consider using mixins. By creating a mixin for styling the test component template (e.g., @mixin creat-test-theme($theme)) and subscribing to isDarkMode only in app.component.ts, you can avoid repeating subscriptions in every component.
in app.component.ts
ngOnInit(): void {
this.isDarkMode = this.themeService.isDarkMode
}
in app.component.html
<div [ngClass]="{'dark-mode': isDarkMode }"></div>
In your app.component.scss file, define the .dark-mode class and include the mixin to apply the current theme to each component when the dark-mode class is added to the DOM.
.dark-mode {
@include creat-test-theme($dark-theme)
}
This way, with the addition of the dark-mode class, your components will automatically adjust to the selected theme.
After reviewing your feedback, it appears that you may be utilizing a component in need of programmatically adding styles to it within Angular but lacking direct access to the component itself.
If the suggested solutions do not meet your requirements, resorting to plain javascript is always an option, although it may not be the most elegant solution.
constructor(private document : Document) {
}
ngOnInit() {
this.document.getElementById('clear').style.display = 'none';
}
However, exercise caution with this method as it can be somewhat heavy-handed and requires careful consideration.
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