用jQuery实现可输入多选下拉组合框实例代码

 container{
   margin: 20px auto;
   padding:0 15px;
   width: 50%; 
   height:300px;
   box-sizing: border-box;  
  }
  .text-container{
   display: inline-block;
   float:left;
   width: 15%;
   height: 32px;
   line-height: 32px;
   box-sizing: border-box;
  }
  .selectContainer{
   width: 70%;
   height:200px;
   float:left;
   position: relative;
   padding:0;
   margin:0;
   box-sizing: border-box;
  }
  .selectedContent{
   width:85%;
   height: 25px;
   float:left;   
  }
  .dropDown-toggle{
   width:14%;
   height:31px;
   line-height: 31px;
   text-align: center;
   border: 1px solid silver;
   border-left:none;
   float:left;
   padding:0;
   margin:0;
   box-sizing: border-box;
   cursor: pointer;
  }
  .dropDown-menu{
   margin:0;
   padding:0 15px 10px;
   width:100%;
   border:1px solid silver;
   border-top: none;
   box-sizing: border-box;
   list-style: none;
   position: absolute;
   top:31px;
   right:0;
  }
  .items{
   margin-top:8px;
   padding: 2px;
   cursor: pointer;
  }
  .items:hover{
   background: #ddd;
  }
  .isSelectedText{
   display: inline-block;
   width:90%;
  }
  .dsn{
   display: none;
  }

 最爱的水果
 

  
  
选择
  

   

    苹果
    
   
   
     
    梨
    
   
   

    橘子
    
   
   

    确定
   
  
 

$('.isSelected input[type=checkbox]').on('click', function(){
   var selectedItems = $(this).parents('.dropDown-menu').prevAll('.selectedContent').val().split(' ');
   var thisItem = $(this).parent().prev().text();
   var isExisted = 0;
   var isChecked = $(this).is(':checked');
   if(isChecked){
    selectedItems.map(function(item, index){
     if(item === thisItem){
      isExisted++
     }
    });
    if(!isExisted){
     selectedItems.push(thisItem)
    }
   }
   else{
    selectedItems.map(function(item, index){
     if(item === thisItem){
      selectedItems.splice(index, 1);
     }
    });
   }
   $(this).parents('.dropDown-menu').prevAll('.selectedContent').val(selectedItems.join(' '));
  })
  $('.confirmSelect').on('click', function(){
   $(this).parents('.dropDown-menu').addClass('dsn');
  })
  $('.dropDown-toggle').on('click', function(){
   $(this).next().toggleClass('dsn')
  });