Requiring a checkbox to be checked

Question

I want a button to be disabled until a checkbox has been checked using a FormBuilder for Angular. I don\'t want to explicitly check the value of the checkbox and would prefe

Answer 1

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TS File

  regForm: FormGroup;isRegSubmit: boolean = false;
  constructor(
    private fb: FormBuilder
  }

  this.regForm = this.fb.group({
        agree    : [false, Validators.requiredTrue]
    });

Validators.required not worked Also, we can show error message by checking the value too and restrict the user to submit but it is not a good approach as we're not using validation, so whenever there is only a single checkbox then add Validators.requiredTrue instead of Validators.required