Vuex实现简单购物车

本文实例为大家分享了Vuex实现简单购物车的具体代码，供大家参考，具体内容如下

文件结构

App.vue

Products.vue

ShoppingCart.vue

modules/products.js

import api from '../../api';
 
const state = {
 all: []
}
 
const getters = {
 allProducts: state => state.all
}
 
const actions = {
 // 获取初始商品数据
 getAllProducts({ commit }) {
 api.getProducts(products => commit('setProducts', products));
 }
}
 
const mutations = {
 setProducts(state, products) {
 state.all = products;
 },
 // 减少该商品库存
 decreamentInventory(state, { id }) {
 let productItem = state.all.find(item => item.id === id);
 productItem.inventory --;
 }
}
 
export default {
 namespaced: true,
 state,
 getters,
 actions,
 mutations
}

modules/cart.js

const state = {
 addedList: []
}
 
const getters = {
 cartProducts(state, getters, rootState) {
 return state.addedList.map((item, index) => {
  let productItem = rootState.products.all.find(product => product.id === item.id);
  return {
  title: productItem.title,
  price: productItem.price,
  quantity: item.quantity
  }
 })
 },
 cartTotalPrice(state, getters) {
 return getters.cartProducts.reduce((total, product) => {
  return total + (product.price * product.quantity);
 }, 0);
 }
}
 
const actions = {
 addToCart({ state, commit }, product) {
 if (product.inventory > 0) {
  let productItem = state.addedList.find(item => item.id === product.id);
  if (productItem) {
  commit('increamentItemQuantity', productItem);
  } else {
  commit('pushItemToCart', product);
  }
  commit('products/decreamentInventory', product, { root: true });
 }
 }
}
 
const mutations = {
 // 增加购物车中同等商品的数量
 increamentItemQuantity(state, { id }) {
 let productItem = state.addedList.find(item => item.id === id);
 productItem.quantity ++;
 },
 // 将商品加入购物车
 pushItemToCart(state, { id }) {
 state.addedList.push({
  id,
  quantity: 1
 })
 },
 
}
 
export default {
 namespaced: true,
 state,
 getters,
 actions,
 mutations
}

store/index.js

import Vue from 'vue';
import Vuex from 'vuex';
import cart from './modules/cart';
import products from './modules/products';
 
Vue.use(Vuex);
 
export default new Vuex.Store({
 modules: {
 cart,
 products
 }
});

main.js

import Vue from "vue";
import App from "@/components/App.vue";
import store from "@/store";
 
Vue.config.productionTip = false;
 
new Vue({
 store,
 render: h => h(App)
}).$mount("#app");

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。