Angular2 patchValue 将值推入数组

# 使用Angular2的patchValue方法向数组中推送值

typescript
import { Component } from '@angular/core';
import { FormBuilder, FormGroup, FormArray } from '@angular/forms';
@Component({
  selector: 'app-root',
  template: `
    
      
        
          
        
      
      Push Value
    
  `,
})
export class AppComponent {
  myForm: FormGroup;
  constructor(private fb: FormBuilder) {
    this.myForm = this.fb.group({
      myArray: this.fb.array([]),
    });
  }
  get arrayControls() {
    return (this.myForm.get('myArray') as FormArray);
  }
  pushValue() {
    const newArrayValue = 'New Value';
    this.arrayControls.push(this.fb.control(newArrayValue));
  }
}