[英]Creating Object with Constructor in React Native
I'm trying to create an RN Object with a constructor passing json object but I'm getting "ReferenceError: Can't find variable: Product".我正在尝试使用传递 json object 的构造函数创建一个 RN Object 但我收到“ReferenceError:找不到变量:产品”。
Product.js产品.js
export default class Product {
constructor(product) {
this.name = product.name
this.items = product.Items
this.price = product.Price
this.productID = product.ProductID
this.medias = product.Medias
this.imageSmall = BASE_IMAGES_URL + product.MediaSmall
this.imageLarge = this.getImageLarge(product.Medias)
}
}
PDP.js PDP.js
import { Product } from '../models/Product'
class PDP extends Component {
render() {
var imagesProd = [];
var product = new Product(this.props.navigation.state.params.currentProduct);
....
}
}
the problem is with new Product()
using directly this.props.navigation.state.params.currentProduct
works fine.问题在于
new Product()
直接使用this.props.navigation.state.params.currentProduct
工作正常。
EDIT编辑
After your tips, I changed the import to import Product from '../models/Product'
but I'm getting根据您的提示,我将导入更改为
import Product from '../models/Product'
但我得到了
TypeError: TypeError: TypeError: TypeError: undefined is not a constructor (evaluating 'new P.default(s)')
TypeError:TypeError:TypeError:TypeError:未定义不是构造函数(评估'new P.default(s)')
The problem is with your import.问题在于您的导入。 You used a default export in Product class so your import should be
您在产品 class 中使用了默认导出,因此您的导入应该是
import Product from '../models/Product'
The first line in PDP.js should be import Product from '../models/Product'
PDP.js 的第一行应该是
import Product from '../models/Product'
Take a look here for few details about import.在这里查看有关导入的一些详细信息。 When should I use curly braces for ES6 import?
什么时候应该使用花括号进行 ES6 导入?
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