button标签点击实现数量加减

如上图所示：

标签及样式如下：

1. .dp_top_amount button{
   float: left;
   width:20px;
   height:22px;
   cursor: pointer;
   background:#fff;
   border:1px solid #ccc;
   }
   .dp_top_amount input{
   float: left;
   height:20px;
   width:36px;
   line-height:20px;
   vertical-align: middle;
   text-align: center;
   border-left: none;
   border-right: none;
   border:1px solid #ccc;
   }

   <divclass="dp_top_amount">
   <span>数量</span>
   <buttontype="button">-</button>
   <inputtype="text"/>
   <buttontype="button">+</button>
   </div>

    

 

 

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