Vue2实现级联然后多选出来然后进行分类的渲染

发布时间：2023年12月21日

在这里插入图片描述

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>

    <!-- <link
      rel="stylesheet"
      href="https://unpkg.com/element-ui/lib/theme-chalk/index.css"
    />
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.13/vue.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@unocss/runtime"></script>
    <script src="https://unpkg.com/element-ui/lib/index.js"></script> -->

    <link rel="stylesheet" href="./vue/element_ui.css" />
    <script src="./vue/vue.js"></script>
    <script src="./vue/unocss.js"></script>
    <script src="./vue/element_ui.js"></script>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      .commodity_title {
        display: flex;
        align-items: center;
        &::after {
          content: '';
          display: block;
          width: 9px;
          height: 9px;
          border-radius: 50%;
          background: #0fa3ff;
          opacity: 60;
          position: absolute;
          left: -15px;
        }
      }
      .commodity {
        .el-cascader__tags {
          padding-left: 30px;
          display: none;
        }
        .el-input__inner {
          background: #fff;
          color: #ffffff;
          border: none;
        }
      }
    </style>
  </head>
  <body>
    <div id="app" class="h-100vh flex justify-center items-center">
      <div class="w-500px">
        <template v-if="getOneImageList == 0">
          <div
            class="min-h-40px border-#DCDFE6 border-solid border-1px rounded-4px"
          >
            <div class="relative">
              <div class="commodity_title absolute top-10px left-30px z-999">
                请选择
              </div>

              <el-cascader
                collapse-tags
                placeholder=""
                class="!w-full commodity"
                v-model="bindVal"
                :options="options"
                :props="{expandTrigger: 'click',multiple: true ,emitPath: false}"
              ></el-cascader>
            </div>
          </div>
        </template>
        <template v-else>
          <div class="flex flex-col gap-15px">
            <div
              v-for="item in getOneImageList"
              class="w-full min-h-40px border-#DCDFE6 border-solid border-1px rounded-4px"
            >
              <div class="relative">
                <div class="commodity_title absolute top-10px left-30px z-999">
                  {{item.label}}
                </div>

                <el-cascader
                  collapse-tags
                  placeholder=""
                  class="!w-full commodity"
                  v-model="bindVal"
                  :options="options"
                  :props="{expandTrigger: 'click',multiple: true ,emitPath: false}"
                ></el-cascader>
                <div class="flex flex-wrap gap-x-20px ml-30px">
                  <div
                    class="commodity_shop h-28px rounded-5px leading-28px !bg-#F0F0F0 px-10px !text-#606266 mb-15px"
                    v-for="v in item.children"
                  >
                    {{v.label}}
                    <i
                      @click="deleteRole(v.value)"
                      class="el-icon-error commodity_close ml-5px cursor-pointer"
                    ></i>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </template>
      </div>
    </div>
    <script>
      new Vue({
        el: '#app',
        data() {
          return {
            bindVal: [],
            options: [
              {
                value: 1,
                label: '青春猪头',
                children: [
                  {
                    value: 11,
                    label: '麻衣',
                  },
                  {
                    value: 12,
                    label: '咲太',
                  },
                ],
              },
              {
                value: 2,
                label: '无职转生',
                children: [
                  {
                    value: 21,
                    label: '卢迪',
                  },
                  {
                    value: 22,
                    label: '艾丽斯',
                  },
                ],
              },
            ],
          };
        },
        watch: {},
        computed: {
          getOneImageList() {
            let newList = [];
            if (this.bindVal != 0) {
              newList = this.options.reduce((acc, item) => {
                let children = item.children.filter((child) => {
                  return this.bindVal.includes(child.value);
                });

                if (children.length > 0) {
                  acc.push({ label: item.label, children });
                }

                return acc;
              }, []);
            }
            return newList;
          },
        },
        methods: {
          deleteRole(e) {
            this.bindVal = this.bindVal.filter((v) => v != e);
          },
        },
      });
    </script>
  </body>
</html>
文章来源:https://blog.csdn.net/weixin_65084919/article/details/135137160
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