vue.js实现复选框选中取消获取选择值

╰半橙微兮° 2021-12-01 12:16 356阅读 0赞

<!DOCTYPE HTML>
    <html lang="zh-cn">
    <head>
    <meta http-equiv="Content-type" content="text/html; charset=UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
    <meta name="renderer" content="webkit">
    <link rel="stylesheet" href="css/style.css" type="text/css">
    <title>多选</title>
    <script src="vue.js" type="text/javascript"></script>
    <style>
     ul, li {
      list-style-type: none;
     }
     
     * {
      margin: 0;
      padding: 0;
     }
     
     .border-1px {
      position: relative;
     }
     
     .border-1px:after {
      display: block;
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      border-top: 1px solid rgba(7, 17, 27, .1);
      content: ' ';
     }
     
     @media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5) {
      .border-1px::after {
      -webkit-transform: scaleY(0.7);
      transform: scaleY(0.7);
      }
     }
     
     @media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2) {
      .border-1px ::after {
      -webkit-transform: scaleY(0.5);
      transform: scaleY(0.5);
      }
     }
     
     #example {
      margin: 20px;
     }
     
     h3 {
      font-size: 26px;
      margin-left: 20px;
      height: 60px;
     }
     
     .self-checkbox {
      display: none;
     }
     
     .self-checkbox + label {
      margin-top: 16px;
      -webkit-appearance: none;
      background-color: #fff;
      border: 2px solid #aaa;
      border-radius: 5px;
      display: inline-block;
      position: relative;
      width: 30px;
      height: 30px;
      box-sizing: border-box;
      vertical-align: top;
     }
     
     .self-checkbox:checked + label {
      border: 2px #47d9bf solid;
     }
     
     .self-checkbox:checked + label:after {
      display: inline-block;
      text-align: center;
      content: '√';
      width: 100%;
      height: 30px;
      line-height: 26px;
      color: #47d9bf;
      font-size: 18px;
      text-shadow: 0px 0px 5px #47d9bf;
     }
     
     .check-area {
      display: inline-block;
      width: 400px;
      padding: 12px 20px;
      border: 1px solid #aaa;
      border-top-left-radius: 4px;
      border-top-right-radius: 4px;
     }
     
     li {
      height: 60px;
     }
     
     li .self-radio + label {
      vertical-align: middle;
     }
     
     li span {
      margin-left: 20px;
      display: inline-block;
      line-height: 60px;
      font-size: 22px;
     }
     
     p {
      height: 60px;
      line-height: 60px;
      margin-left: 20px;
     }
     
     p span {
      color: #f00;
     }
     
     .btn {
      margin: 20px auto;
      width: 100%;
      text-align: center;
     }
     
     .btn button {
      width: 120px;
      height: 40px;
      line-height: 30px;
      font-size: 16px;
      color: #fff;
      background: #47d9bf;
      border: 1px #23d5b6 solid;
      border-radius: 6px;
      text-align: center;
      outline: none;
     }
     
     .btn button:hover {
      background: #23d5b6;
     }
     </style>
    </head>
    <body>
    <div id="example">
     <h3>多选按钮</h3>
     <div class="check-area" v-show="items.length!=0">
     <ul>
      <li class="border-1px" v-for="(item,index) in items">
        <input class="self-checkbox" type="checkbox" name="radio"
        :id="'checkbox-'+item.id" 
        :data-id="'food-'+item.id"  
        :value="item.value"
        v-model="checkValues"
        @click="setCheckValue($event,item)">
        <label :for="'checkbox-'+item.id"></label>
        <span>{
       {item.value}}</span>
      </li>
     </ul>
     <p>您选择了：<span v-show="checkValues.length">{
       {filterCheckValues}}</span></p>
     <div class="btn">
      <button @click="showCheck(checkIds)">按钮</button>
      <span v-show="checkIds.length">{
       {checkIds}}</span>
     </div>
     </div>
    </div>
    <script>
     var itemData = [
       {id: '20170811001', value: '香蕉'},
       {id: '20170811002', value: '苹果'},
       {id: '20170811003',value: '梨子'}, 
       {id: '20170811004', value: '葡萄'}
     ]
     //itemData = [];
     var vm = new Vue({
     el: '#example',
     data: {
      items: '',
      checkValues: [],
      checkIds: []
     },
     computed: {
      filterCheckValues: function () {
        var value = this.checkValues;
        var reValue = '';
        for (var i = 0; i < value.length; i++) {
         reValue += value[i] + '、'
        }
        reValue = reValue.substring(0, reValue.length - 1)
        return reValue;
      }
     },
     methods: {
      initData: function () {
        var self = this;
        self.items = itemData;
        if (itemData.length != 0) {
          //   self.checkValues[0] = self.items[0].value;
          //   self.checkIds[0] = 'food-' + self.items[0].id;
        }
      },
      setCheckValue: function (ev, item) {
        var id = 'food-' + item.id;
        if (ev.target.checked) {
         this.checkIds.push(id);
        } else if (this.checkIds.indexOf(id) > -1) {
         this.checkIds.remove(id);
        }
      },  
      showCheck: function () {
        console.log(this.checkIds)
      }
     },
     filter: {},
       mounted: function () {
        this.initData();
       }
     })
    
     Array.prototype.remove = function (val) {
       var index = this.indexOf(val);
       if (index > -1) {
        this.splice(index, 1);
       }
     }
    </script>
    </body>
    </html>