问题描述
当我尝试运行此代码时,出现以下错误:
×TypeError:无法读取未定义的属性(读取‘map’)
我不知道为什么。我已经尝试了可能的方法,但没有奏效。
import React from 'react';
import Grid from '@material-ui/core/Grid';
import Product from './Product/Product';
import useStyles from './styles';
const products = [
{id: 1, name: 'Shoes', description: 'Running Shoes.' },
{id: 2, name: 'MacBook', description: 'Apple MacBook.' },
];
const Products = ({ products }) => {
const classes = useStyles();
return (
<main className={classes.content}>
<div className={classes.toolbar} />
<Grid container justify="center" spacing={4}>
{products.map((products) => (
<Grid item key={product.id} item xs={12} sm={6} md={4} lg={3}>
<Product />
</Grid>
))};
</Grid>
</main>
);
};
export default Products;
推荐答案
我遇到了相同的错误,并通过首先询问数组是否存在来解决它。
示例:
<Filter>
{ product.color?.map((c) => (
<FilterColor color = {c} key = {c} />
))};
</Filter>