Angular: Property 'controls' does not exist on type 'AbstractControl'. ng build --prod  error

Running the application usingng serveworks fine.

usingng buildworks fine.

when usingng build --prod --aotorng build --prodI get the error.

出错位置:

<div *ngFor="let address of myForm.get('addresses').controls; let i=index"

解决方法:

一种方法:

在ts文件中添加方法:

formData { return <FormArray>this.form.get('Data'); }

在html中:

<div *ngFor="let address of formData; let i=index"

<FormArray>中包括control

第二种方法:

直接改变html:

<div *ngFor="let address of myForm.get('addresses')['controls']; let i=index"

即可!