项目中需要自定义一个下拉框多选插件，业务问题还是自己实现比较好
通过$.fn 向jQuery添加新的方法
下拉数据通过参数传递进去，通过调用该插件时接收，选择后的确定与取消事件采用事件传递方式
代码如下：
1.效果图
2.代码
<div> <div> <span></span> <input type="text" placeholder="请选择" readonly="readonly" /> </div> <div> <div> <span></span> <input type="text" placeholder="关键字搜索" /> </div> <ul> <!-- area for dropdown items --> </ul> <div> <button>确定</button> <button>取消</button> </div> </div> </div>
.dropdown-container{ display: block; width: 200px; height: 30px; padding: 0px; position: relative; margin: 0px auto; } .dropdown-display{ display: block; height: 30px; position: absolute; top: 0; width:100%; margin: 0px; border:1px solid steelblue; } .dropdown-display span{ background: url(../static/choose_down_icon_01.png) no-repeat left 8px; display: block; height: 25px; width: 10px; position: absolute; right: 5px; top: 3px; } .dropdown-display input[class='iptdiplay']{ border: none; border-color: transparent; background: transparent; border-radius: 0px; box-shadow: none; height: 30px; width: 100%; margin: 0px; box-sizing: border-box; box-shadow: none; padding-left: 10px; padding-right: 18px; outline: none; cursor: pointer; text-overflow: ellipsis; } .dropdown-panel { position: absolute; top: 32px; width:100%; padding: 0px; display: none; border-left: 1px solid steelblue; border-bottom: 1px solid steelblue; border-right: 1px solid steelblue; } .dropdown-panel .dropdown-search{ display: block; width: 100%; height: 30px; } .dropdown-search span{ background: url(../static/chosen-sprite.png) no-repeat 100% -20px,linear-gradient(#eee 1%,#fff 15%); display: block; height: 25px; width: 20px; position: absolute; right: 0px; top: 3px; } .dropdown-search input[class='iptsearch']{ border: none; border-color: transparent; background: transparent; border-radius: 0px; box-shadow: none; height: 30px; width: 100%; margin: 0px; box-sizing: border-box; box-shadow: none; padding-left: 10px; outline: none; } .dropdown-panel .dd-select{ display: block; width:100%; position: relative; height: auto; margin: 0px; padding:0px !important; box-sizing: border-box; list-style-type: none; text-align: left; max-height: 300px; overflow-y: scroll; overflow-x: hidden; } .dd-item{ display: block; height: 30px; line-height: 30px; padding-left: 5px; border-bottom: 1px solid steelblue; font-size: 13px; z-index: 8; overflow: hidden; } .dd-item .dd-v{ width: 0px; height: 0px; display: none; } .dd-item .dd-k{ z-index: 8; padding-left: 15px; } .dd-item:first-child{ border-top: 1px solid steelblue; } .dd-item:last-child{ border-bottom: none; } .dd-select .on{ background-color: steelblue\9; } .dd-item:hover::before,.dd-item:hover before{ content:'\2714'; position: absolute; left: 0px; color: #79a979 z-index: 9; font-size: 16px; padding-right: 3px; padding-left: 2px; background-color: #fff; } .dd-select .on::before,.dd-select .on before{ content:'\2714'; position: absolute; left: 0px; color: green; z-index: 9; font-size: 16px; padding-right: 3px; padding-left: 2px; background-color: #fff; } .dd-item:hover{ cursor: pointer; background-color: #ccc; } .dropdown-container .dropdown-opt{ width:100%; text-align: center; position: absolute; left: -1px; bottom: -30px; padding: 0px; border-left: 1px solid steelblue; border-bottom: 1px solid steelblue; border-right: 1px solid steelblue; box-sizing: content-box; } .dropdown-container .dd-btn{ color: #333; height: 28px !important; display: inline-block; background-color: #e6e6e6; border-color: #adadad; user-select: none; background-image: none; border: 1px solid transparent; border-radius: 4px; margin: 0px 15px; } .dropdown-container .dd-btn:hover{ color:#fff; background-color: steelblue; } /* scrollbar */ .dropdown-container ::-webkit-scrollbar { width: 5px; height: 10px; } .dropdown-container ::-webkit-scrollbar-track, .dropdown-container ::-webkit-scrollbar-thumb { border-radius: 999px; border: 5px solid transparent; } .dropdown-container ::-webkit-scrollbar-track { box-shadow: 1px 1px 5px rgba(0,0,0,.2) inset; } .dropdown-container ::-webkit-scrollbar-thumb { min-height: 20px; background-clip: content-box; box-shadow: 0 0 0 5px rgba(0,0,0,.2) inset; } .dropdown-container ::-webkit-scrollbar-corner { background: transparent; }
3.Jquery插件