这是我遇到的错误:
ERROR in src\app\admin\product-form\product-form.component.html(8,43): : Property 'title' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(17,74): : Property 'price' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(26,76): : Property 'category' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(41,73): : Property 'imageUrl' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(8,43): : Property 'title' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(17,74): : Property 'price' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(26,76): : Property 'category' does not exist on type '{}'.
src\app\admin\product-form\product-form.component.html(41,73): : Property 'imageUrl' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(5,42): : Property 'name' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(12,44): : Property 'email' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(19,56): : Property 'phonenumber' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(26,58): : Property 'addressLine1' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(33,58): : Property 'addressLine2' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(40,42): : Property 'city' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(5,42): : Property 'name' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(12,44): : Property 'email' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(19,56): : Property 'phonenumber' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(26,58): : Property 'addressLine1' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(33,58): : Property 'addressLine2' does not exist on type '{}'.
src\app\shipping-form\shipping-form.component.html(40,42): : Property 'city' does not exist on type '{}'.
答案 0 :(得分:0)
您需要使用* ngIf(在模板文件中),也可以使用三元运算符。
模板
<div *ngIf="user">
<span>Hello {{user.fname}}</span>
</div>
<div>
<span>Hello {{user?.fname}}</span>
</div>
答案 1 :(得分:0)
解决方案1: 创建接口并在组件类中将接口分配为对象类型
interface myObjInterface {
title : string;
price : string;
category : string;
imageUrl : string;
title : string;
price : string;
category : string;
imageUrl : string;
name : string;
email : string;
phonenumber : string;
addressLine1 : string;
addressLine2 : string;
city : string;
name : string;
email : string;
phonenumber : string;
addressLine1 : string;
addressLine2 : string;
city : string;
}
在组件类中:
yourObject : myObjInterface;
解决方案2: 使用 * ngIf 并在对象为空时隐藏父div
<div *ngIf="yourObject && yourObject.title">
/* Your html code should be here*/
</div>
解决方案3: 在Component class中:
yourObject : any = {
title : "",
price : "",
category : "",
imageUrl : "",
title : "",
price : "",
category : "",
imageUrl : "",
name : "",
email : "",
phonenumber : "",
addressLine1 : "",
addressLine2 : "",
city : "",
name : "",
email : "",
phonenumber : "",
addressLine1 : "",
addressLine2 : "",
city : ""
};
答案 2 :(得分:0)
这样做,问题就会消失,
在 product-form.component.ts 中:
product = {};
=> product: any = {};
在shipping-form.component.ts
shipping = {};
=> shipping: any = {};
答案 3 :(得分:0)
如果您编写 <span >{{user.name}}</span>
,编译器会验证以下内容:
重要的是,它不会检查嵌入视图,例如 *ngIf
、*ngFor
、其他 <ng-template>
嵌入视图。
它没有弄清楚#refs 的类型、管道的结果、事件绑定中 $event 的类型等等。
话虽如此,您可以执行以下解决方案之一:
*ngIf
下any
我建议使用前两个选项,定义您的类型,因为这是正确的做法,仅当数据可用时才使用 *ngIf 呈现视图。
如果您不使用 *ngIf
,请确保使用空合并运算符 '?' like 遵循 <span >{{user?.name}}</span>
到模板中的空引用异常。