Adauga clasă la element folosind directiva unghiulare

Exemple de cod

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adauga clasă la element unghiular în ts

type one

[class.my-class]="step === 'step1'"
type two

[ngClass]="{'my-class': step === 'step1'}"
and multiple option:

[ngClass]="{'my-class': step === 'step1', 'my-class2':step === 'step2' }"
type three

[ngClass]="{1:'my-class1',2:'my-class2',3:'my-class4'}[step]"
type four

[ngClass]="(step=='step1')?'my-class1':'my-class2'"
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creați clasa CSS în directiva unghiulare

@Directive({
    selector: '[myHighlight]',
})
class MyDirective {
  @HostBinding('style.background-color')
  backgroundColor:string = 'yellow';
}

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