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Vue Cli(脚手架)实现购物车小案例

发布于:2021-12-09 09:55:04  栏目:技术文档

Vue Cli(脚手架)实现购物车小案例

首先安装脚手架

npm install -g @vue/cli

然后执行

vue create totalprice

项目创建完成后的目录

在App.vue里面编写代码,如下
  1. <template>
  2. <div>
  3. <div v-if="cartlist.length <=0 ">你没有选择的商品,购物车为空, 去购物</div>
  4. <table v-else>
  5. <caption>
  6. <h1>购物车</h1>
  7. </caption>
  8. <tr>
  9. <th>选中</th>
  10. <th>编号</th>
  11. <th>商品名称</th>
  12. <th>商品价格</th>
  13. <th>购买数量</th>
  14. <th>操作</th>
  15. </tr>
  16. <tr v-for="(item,index) in cartlist" :key="item.id">
  17. <td><input type="checkbox" v-model="item.checkbox"></td>
  18. <td>{{item.id}}</td>
  19. <td>{{item.name}}</td>
  20. <td><small>¥</small>{{item.price.toFixed(2)}}</td>
  21. <td>
  22. <button @click="item.count--" :disabled="item.count<=1">-</button>
  23. {{item.count}}
  24. <button @click="item.count++">+</button>
  25. </td>
  26. <td><a href="#" @click.prevent="del(index)">删除</a></td>
  27. </tr>
  28. <tr>
  29. <td colspan="3" align="right">总价</td>
  30. <td colspan="3">{{totalPrice}}</td>
  31. </tr>
  32. </table>
  33. </div>
  34. </template>
  35. <script>
  36. export default {
  37. name: 'App',
  38. data() {
  39. return {
  40. cartlist: [{
  41. id: 1,
  42. checkbox: true,
  43. name: '《细说PHP》',
  44. price: 10,
  45. count: 1
  46. },
  47. {
  48. id: 2,
  49. checkbox: true,
  50. name: '《细说网页制作》',
  51. price: 10,
  52. count: 1
  53. },
  54. {
  55. id: 3,
  56. checkbox: true,
  57. name: '《细说JavaScript语言》',
  58. price: 10,
  59. count: 1
  60. },
  61. {
  62. id: 4,
  63. checkbox: true,
  64. name: '《细说DOM和BOM》',
  65. price: 10,
  66. count: 1
  67. },
  68. {
  69. id: 5,
  70. checkbox: true,
  71. name: '《细说Ajax与jQuery》',
  72. price: 10,
  73. count: 1
  74. },
  75. {
  76. id: 6,
  77. checkbox: true,
  78. name: '《细说HTML5高级API》',
  79. price: 10,
  80. count: 1
  81. },
  82. ]
  83. }
  84. },
  85. methods: {
  86. del(index) {
  87. //根据索引删除商品
  88. this.cartlist.splice(index, 1);
  89. }
  90. },
  91. computed: {
  92. totalPrice: {
  93. get() {
  94. let sum = 0;
  95. for (let book of this.cartlist) {
  96. if (book.checkbox) {
  97. //计算商品价格
  98. sum += book.price * book.count;
  99. }
  100. }
  101. return '¥' + sum.toFixed(2);
  102. }
  103. }
  104. }
  105. }
  106. </script>
  107. <style scoped>
  108. table {
  109. width: 600px;
  110. border: 1px solid #888888;
  111. border-collapse: collapse;
  112. }
  113. th {
  114. background: #ccc;
  115. }
  116. td,
  117. th {
  118. border: 1px solid #888888;
  119. padding: 10px;
  120. }
  121. </style>
npm run serve" class="reference-link">运行 npm run serve
效果展示

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