Angular - Check if all options are selected to enable button

Question

This is a quiz app, in this scenario my next button will redirect to another page and it\'s disabled by default. If I choose all the options it shou

Answer 1

you can use Object.keys for that, like this

App.component.html

    Next
  

app.component.ts

isDisabled(): boolean {
  return Object.keys(this.answerEvaluation).length !== Object.keys(this.practiceQuizData).length;
}