提交表单时选择下拉发送null(Angular、Reactive form)

TYPESCRIPT COMPONENT

import { Component, OnInit } from '@angular/core';
  import { FormBuilder, FormGroup } from '@angular/forms';
  
  @Component({
  selector: 'app-post-a-job',
  templateUrl: './post-a-job.component.html',
  styleUrls: ['./post-a-job.component.scss']
})
export class PostAJobComponent implements OnInit {
  
  myForm: FormGroup;
 
 jobTypes = [{
    value: 'manager', view: 'Manager'
  }]
 
 constructor(private fb: FormBuilder) { }
 
 ngOnInit(): void {
    this.buildForm();
  }

  buildForm() {
    return this.myForm = this.fb.group({
      jobType: null
    });
  }
 save(form) {
    console.log(JSON.stringify(form.value));
  }
   }

MODULE

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';

import { JobsRoutingModule } from './jobs-routing.module';
import { JobsComponent } from './jobs.component';
import { HttpClientModule } from '@angular/common/http';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { PostAJobComponent } from './components/post-a-job/post-a-job.component';


@NgModule({
  declarations: [
    JobsComponent,
    PostAJobComponent
  ],
  imports: [
    CommonModule,
    JobsRoutingModule,
    FormsModule,
    ReactiveFormsModule,
    HttpClientModule
  ]
})
export class JobsModule { }

HTML

<form [formGroup]="myForm">
 <select formControlName="jobType">
            <option [value]="null">(new customer)</option>
            <option [value]="job.value" *ngFor="let job of jobTypes">
                {{job.view}}
            </option>
</select>
 <button type="submit" (click)="save(myForm)" class="btn btn-default">Submit</button>
</form>