Variables In Component
In Angular, We use {{ }} to insert javascript result in component
@Component({
selector: 'app-root',
template: `
1 + 1 = {{ 4 }}
`,
standalone: true
})-
demo

And We can use variable like this.
import {Component} from '@angular/core';
@Component({
selector: 'app-root',
template: `
Hello {{city}}
`,
standalone: true,
})
export class AppComponent {
city = 'Taiwan'
}