Element: el-select下拉框 获取值

1、给el-select绑定change事件：

<el-select v-model="currentRoleId" @change="getSelectValue">
            <el-option label="请选择" :value="-1"></el-option>
            <el-option
              v-for="(item, i) in roles"
              :key="i"
              :label="item.rolename"
              :value="item.id"
            ></el-option>
</el-select>

2、在methods中获取值：

getSelectValue(id) {
      let obj = {};
      obj = this.roles.find((item) => {
        return item.id === id;
      });
      this.currentRoleName = obj.rolename;
},