Angular 4 remove required validator conditionally

Question

In Angular 4 app I have a form model like this:

this.form = this._fb.group({
    title: [\'\', [Validators.required, Validators.minLength(3), Validators.maxLengt         


        

Answer 1

Use empty array to remove all existing validators.

this.frmFeasibility.controls['pop_name'].setValidators([]);
this.frmFeasibility.controls['pop_name'].updateValueAndValidity();