vue点击切换颜色限制个数（用了mui框架）

vue点击切换颜色

  • 只能点击一个
    <!doctype html>

      <head>
  	<meta charset="UTF-8">
  	<title>修改资料--类别</title>
  	<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
  	<link href="../../css/mui.min.css" rel="stylesheet" />
  	<link rel="stylesheet" href="../../css/modify-categroy.css" />
  </head>

  <body>
  	<div id="categroy" v-cloak>
  		<header class="mui-bar mui-bar-nav">
  			<a class="mui-action-back mui-icon mui-icon-left-nav mui-pull-left"></a>
  			<h1 class="mui-title">类别</h1>
  			<span class="mui-save mui-pull-right">保存</span>
  		</header>
  		<div class="mui-content">
  			<div class="categroy-box" >
  				<span class="categroy-btn " v-for="(item,index) in items" :class='{active:changeActive == index }' @tap="isActive(index)">{{item.msg}}</span>
  			</div>
  		</div>
  		<p>最多可选择三项</p>
  	</div>
  	<script src="../../js/mui.min.js"></script>
  	<script src="../../js/vue.js"></script>
  	<script type="text/javascript">
  		mui.init()
  		var categroy = new Vue({
  			el:'#categroy',
  			data:{
  				items:[{
  					msg: '电影'
  				},{
  					msg: '剧集'
  				},{
  					msg: '综艺'
  				},{
  					msg: 'MV'
  				},{
  					msg: '记录'
  				},{
  					msg: '广告'
  				},{
  					msg: 'VR'
  				},{
  					msg: '动漫'
  				},{
  					msg: '其他'
  				}
  				],
  				changeActive:0
  			},
  			mounted:function() {
  				
  			},
  			methods: {
  				isActive:function(index) {
  					var _this = this;
  					_this.changeActive = index;
  				}
  			}
  		})
  	</script>
  </body>

less

  • 用less实现

      #categroy {
  .mui-bar {
      background: #fff;
      box-shadow: none;
      border-bottom: 1px solid #c8c7cc;
      .mui-icon {
          color: #c8c7cc;
      }
      .mui-save {
          padding: 14px 10px;
          margin: 0 -10px;
          font-size: 14px;
      }
      
  }
  .mui-content {
      width: 100%;
      height: 100%;
      background: #ffffff;
      .categroy-box {
          margin: 13px 30px;
          .categroy-btn {
              display: inline-block;
              width: 23%;
              line-height: 2;
              margin: 0 5px 8px 0;
              text-align: center;
              font-size: 1.6rem;
          }
          .active {
              border-radius: 16px;
              color: #ffffff;
              background: #0189ff;
          }
          
      }
  }
  p {
      margin: 12px 0 0 20px;
      font-size: 1.6rem;
  }
  
  }

vue点击切换颜色限制个数

<!doctype html>
<html>

	<head>
		<meta charset="UTF-8">
		<title>修改资料--类别</title>
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<link href="../../css/mui.min.css" rel="stylesheet" />
		<link rel="stylesheet" href="../../css/modify-categroy.css" />
	</head>

	<body>
		<div id="categroy" v-cloak>
			<header class="mui-bar mui-bar-nav">
				<a class="mui-action-back mui-icon mui-icon-left-nav mui-pull-left"></a>
				<h1 class="mui-title">类别</h1>
				<span class="mui-save mui-pull-right">保存</span>
			</header>
			<div class="mui-content">
				<div class="categroy-box" >
					<span class="categroy-btn " v-for="(item,index) in items" :class='{active:item.checked }' @tap="isActive(item)">{{item.msg}}</span>
				</div>
			</div>
			<p>最多可选择三项</p>
		</div>
		<script src="../../js/mui.min.js"></script>
		<script src="../../js/vue.js"></script>
		<script type="text/javascript">
			mui.init()
			var categroy = new Vue({
				el:'#categroy',
				data:{
					items:[{
						msg: '电影'
					},{
						msg: '剧集'
					},{
						msg: '综艺'
					},{
						msg: 'MV'
					},{
						msg: '记录'
					},{
						msg: '广告'
					},{
						msg: 'VR'
					},{
						msg: '动漫'
					},{
						msg: '其他'
					}
					]
				},
				mounted:function() {
					
				},
				methods: {
					isActive:function(item) {
					var _this = this;
					var a = document.getElementsByClassName('active');
                                             //如果active class的checked是否存在
					if(typeof item.checked == 'undefined') {
						if(a.length<3){
							console.log(a.length)
                                                                //全局创建
                                                              //Vue.set(item,'checked',true);
                                                              //局部创建
							_this.$set(item,'checked',true);
						}else {
							mui.toast('最多选择三项')
						}
					}else{
						item.checked = !item.checked;
					}
				}
				}
			})
		</script>
	</body>

</html>
posted @ 2018-06-08 14:34  不完美的完美  阅读(311)  评论(0)  编辑  收藏  举报