20181209——复习ElementUI（二）Form操作

Radio 单选框
el-radio 标签
里面v-model绑定这个data中的数据项
label表示是第几个，在data中数据中的返回值进行选定

disabled属性，使单选框禁用 只要给radio标签设置了disabled属性，无法更改

单选框组，节省了代码，无需给每一个单选框都绑定v-model el-radio-group
单选框组还有size属性，来决定单选框的大小
设置border可以设置单选框的边框

Checkout复选框
indeterminate 状态
min,max来控制选项能勾选的

想换一种方式，可以把el-checkbox换成el-checkbox-button
border可以设置边框

Input框
el-input
placeholder 文本内容

带icon的输入框，可以通过prefix-icon和suffix-icon属性在input组件首部和尾部增加显示图标，也可以通过slot放置图标
想要变成文本域 type=textarea
文本域高度可以通过row来控制

可自适应的文本高度的文本域 :autosize="{minRows:2,maxRows:4}"

复合型输入框
可前置或后置元素，一般为标签或按钮

<el-row class="demo-autocomplete">
  <el-col :span="12">
    <div class="sub-title">激活即列出输入建议</div>
    <el-autocomplete
      class="inline-input"
      v-model="state1"
      :fetch-suggestions="querySearch"
      placeholder="请输入内容"
      @select="handleSelect"
    ></el-autocomplete>
  </el-col>
  <el-col :span="12">
    <div class="sub-title">输入后匹配输入建议</div>
    <el-autocomplete
      class="inline-input"
      v-model="state2"
      :fetch-suggestions="querySearch"
      placeholder="请输入内容"
      :trigger-on-focus="false"
      @select="handleSelect"
    ></el-autocomplete>
  </el-col>
</el-row>
<script>
  export default {
    data() {
      return {
        restaurants: [],
        state1: '',
        state2: ''
      };
    },
    methods: {
      querySearch(queryString, cb) {
        var restaurants = this.restaurants;
        var results = queryString ? restaurants.filter(this.createFilter(queryString)) : restaurants;
        // 调用 callback 返回建议列表的数据
        cb(results);
      },
      createFilter(queryString) {
        return (restaurant) => {
          return (restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0);
        };
      },
      loadAll() {
        return [
          { "value": "三全鲜食（北新泾店）", "address": "长宁区新渔路144号" },
          { "value": "Hot honey 首尔炸鸡（仙霞路）", "address": "上海市长宁区淞虹路661号" },
          { "value": "新旺角茶餐厅", "address": "上海市普陀区真北路988号创邑金沙谷6号楼113" },
          { "value": "泷千家(天山西路店)", "address": "天山西路438号" },
          { "value": "胖仙女纸杯蛋糕（上海凌空店）", "address": "上海市长宁区金钟路968号1幢18号楼一层商铺18-101" },
          { "value": "贡茶", "address": "上海市长宁区金钟路633号" },
          { "value": "豪大大香鸡排超级奶爸", "address": "上海市嘉定区曹安公路曹安路1685号" },
          { "value": "茶芝兰（奶茶，手抓饼）", "address": "上海市普陀区同普路1435号" },
          { "value": "十二泷町", "address": "上海市北翟路1444弄81号B幢-107" },
          { "value": "星移浓缩咖啡", "address": "上海市嘉定区新郁路817号" },
          { "value": "阿姨奶茶/豪大大", "address": "嘉定区曹安路1611号" },
          { "value": "新麦甜四季甜品炸鸡", "address": "嘉定区曹安公路2383弄55号" },
          { "value": "Monica摩托主题咖啡店", "address": "嘉定区江桥镇曹安公路2409号1F，2383弄62号1F" },
          { "value": "浮生若茶（凌空soho店）", "address": "上海长宁区金钟路968号9号楼地下一层" },
          { "value": "NONO JUICE  鲜榨果汁", "address": "上海市长宁区天山西路119号" },
          { "value": "CoCo都可(北新泾店）", "address": "上海市长宁区仙霞西路" },
          { "value": "快乐柠檬（神州智慧店）", "address": "上海市长宁区天山西路567号1层R117号店铺" },
          { "value": "Merci Paul cafe", "address": "上海市普陀区光复西路丹巴路28弄6号楼819" },
          { "value": "猫山王（西郊百联店）", "address": "上海市长宁区仙霞西路88号第一层G05-F01-1-306" },
          { "value": "枪会山", "address": "上海市普陀区棕榈路" },
          { "value": "纵食", "address": "元丰天山花园(东门) 双流路267号" },
          { "value": "钱记", "address": "上海市长宁区天山西路" },
          { "value": "壹杯加", "address": "上海市长宁区通协路" },
          { "value": "唦哇嘀咖", "address": "上海市长宁区新泾镇金钟路999号2幢（B幢）第01层第1-02A单元" },
          { "value": "爱茜茜里(西郊百联)", "address": "长宁区仙霞西路88号1305室" },
          { "value": "爱茜茜里(近铁广场)", "address": "上海市普陀区真北路818号近铁城市广场北区地下二楼N-B2-O2-C商铺" },
          { "value": "鲜果榨汁（金沙江路和美广店）", "address": "普陀区金沙江路2239号金沙和美广场B1-10-6" },
          { "value": "开心丽果（缤谷店）", "address": "上海市长宁区威宁路天山路341号" },
          { "value": "超级鸡车（丰庄路店）", "address": "上海市嘉定区丰庄路240号" },
          { "value": "妙生活果园（北新泾店）", "address": "长宁区新渔路144号" },
          { "value": "香宜度麻辣香锅", "address": "长宁区淞虹路148号" },
          { "value": "凡仔汉堡（老真北路店）", "address": "上海市普陀区老真北路160号" },
          { "value": "港式小铺", "address": "上海市长宁区金钟路968号15楼15-105室" },
          { "value": "蜀香源麻辣香锅（剑河路店）", "address": "剑河路443-1" },
          { "value": "北京饺子馆", "address": "长宁区北新泾街道天山西路490-1号" },
          { "value": "饭典*新简餐（凌空SOHO店）", "address": "上海市长宁区金钟路968号9号楼地下一层9-83室" },
          { "value": "焦耳·川式快餐（金钟路店）", "address": "上海市金钟路633号地下一层甲部" },
          { "value": "动力鸡车", "address": "长宁区仙霞西路299弄3号101B" },
          { "value": "浏阳蒸菜", "address": "天山西路430号" },
          { "value": "四海游龙（天山西路店）", "address": "上海市长宁区天山西路" },
          { "value": "樱花食堂（凌空店）", "address": "上海市长宁区金钟路968号15楼15-105室" },
          { "value": "壹分米客家传统调制米粉(天山店)", "address": "天山西路428号" },
          { "value": "福荣祥烧腊（平溪路店）", "address": "上海市长宁区协和路福泉路255弄57-73号" },
          { "value": "速记黄焖鸡米饭", "address": "上海市长宁区北新泾街道金钟路180号1层01号摊位" },
          { "value": "红辣椒麻辣烫", "address": "上海市长宁区天山西路492号" },
          { "value": "(小杨生煎)西郊百联餐厅", "address": "长宁区仙霞西路88号百联2楼" },
          { "value": "阳阳麻辣烫", "address": "天山西路389号" },
          { "value": "南拳妈妈龙虾盖浇饭", "address": "普陀区金沙江路1699号鑫乐惠美食广场A13" }
        ];
      },
      handleSelect(item) {
        console.log(item);
      }
    },
    mounted() {
      this.restaurants = this.loadAll();
    }
  }
</script>

select选择器
可搜索的选择框 filterable

Cascader 级联选择器
el-cascader
:options=data中存放options
filterable
options

switch开关
slider滑块
时间选择器
日期选择器

upload
通过点击或者拖拽上传文件
action 必选参数，上传的地址
drag启动拖拽上传

Rate评分

Transfer穿梭框

Form表单
设置rules规则来判断
status-icon 反馈图标

validate：对整个表单进行校验的方法，参数为一个回调函数。该回调函数会在校验结束后被调用，并传入两个参数：是否校验成功和未通过校验的字段。若不传入回调函数，则会返回一个 promise

validateField：对部分表单字段进行校验的方法

resetFields：对整个表单进行重置，将所有字段值重置为初始值并移除校验结果

prop：表单域 model 字段，在使用 validate、resetFields 方法的情况下，该属性是必填的

这rules里面的trigger是怎么去触发这个

this.$ref.ref绑定的值
通过这个来操纵dom节点，进行更改