我是新手,正在制作网上商店的项目。 我有两个错误,我无法以任何方式修复:
1)[Vue warn]: 在渲染期间访问了属性“$store”,但未在实例上定义。
2)Uncaught TypeError: Cannot read properties of undefined (reading 'state')
商店.js
import { createStore } from 'vuex'
import axios from "axios";
const store = createStore({
state:{
products:[]
},
mutations:{
SET_PRODUCTS_TO_STATE:(state,products)=>{
state.products = products;
}
},
actions:{
GET_PRODUCTS_FROM_API({commit}) {
return axios('http://localhost:3000/products',{
method:"GET"
})
.then((products) =>{
commit('SET_PRODUCTS_TO_STATE',products.data);
return products;
})
.catch((error)=>{
console.log(error)
return error;
})
}
},
getters:{
PRODUCTS(state){
return state.products;
}
}
});
export default store;
v-目录.vue
<template>
<div class = 'v-catalog'>
<h1>Catalog</h1>
<div class ="v-catalog__list">
<v-catalog-item
v-for="product in this.$store.state.products"
:key="product.article"
v-bind:product_data="product"
@sendArticle="showChildArticleInConsole"
/>
</div>
</div>
</template>
如果你把“这个”去掉它就可以了
v-for="product in $store.state.products"
你需要在脚本中使用“this”,而不是在模板中。
Vue3.x,你应该在 someItem.vue 中导入商店 在您的情况下,以下代码:
import { useStore } from 'vuex';
export default {
setup(){
let store = useStore()
let products = store.state.products
return {
products
}
}
}
// use products in template
v-for="product in products"
您不需要在 Vue 3 中创建 store.js。在文件 v-catalog.vue 中,您必须编写以下代码
<template>
<div class = 'v-catalog'>
<h1>Catalog</h1>
<div class ="v-catalog__list">
<v-catalog-item
v-for="product in products"
:key="product.article"
v-bind:product_data="product"
@sendArticle="showChildArticleInConsole"
/>
</div>
</div>
</template>
<script>
import vCatalogItem from './v-catalog-item'
import axios from "axios";
export default {
components: {
vCatalogItem
},
name: "v-catalog",
data() {
return {
products: []
}
},
async created() {
try {
const res = await axios.get(`http://localhost:3000/products`);
this.products = res.data;
} catch (e) {
console.error(e);
}
}
}
</script>