看上去没怎么难吧，其实就是强化JQ，免得太久没用，生疏了。好了。附上我的代码：
代码如下:
(function($){
var option={
isEdit:false, //是否可以编辑:默认是否
Listheight:200, //下拉框高度
ListWidth:0, //下拉框长度
//数据源
data:[
{"value":1,"text":"选择1"},
{"value":2,"text":"选择2"},
{"value":3,"text":"选择3"},
{"value":4,"text":"选择4"}
]
}
//开始创建下拉框
function Start(obj)
{
if(!option.isEdit)
{
obj.attr({"readonly":"readonly"});
}
var myList=$("");
var ul=$("");
ul.css({"list-style":"none","margin":"0px","padding":"2px"});
myList.css({"border":"1px solid #D9E5F3","position":"absolute","overflow-y":"scroll","background-color":"#fff","font-size":"12px"});
if(option.Listheight<=0)
{
option.Listheight=200;
}
myList.height(option.Listheight);
if(option.ListWidth<=0)
{
option.ListWidth=obj.width()
}
myList.width(option.ListWidth);
//默认位置是在创建元素的下方
myList.offset({"top":obj.offset().top+obj.outerHeight(),"left":obj.offset().left});
var data=option.data;
if(data.length>0) FoucsShow($(obj),myList); } 前台调用： 代码如下:
{
for(i=0;i
var li=$("");
var ListSon=$("");
ListSon.change(function(){
if(this.checked)
{
obj.val(obj.val()+$(this).val());
}
else
{
obj.val(obj.val().replace($(this).val(),""));
}
})
myList.mouseover(function(){
myList.show();
})
myList.mouseout(function(){
myList.hide();
})
var span=$("");
span.text(data[i].text);
ListSon.val(data[i].value+";");
li.append(ListSon);
li.append(span);
ul.append(li);
}
}
myList.append(ul);
myList.appendTo("body");
myList.hide();
}
// 当获取到焦点使出现该下拉框
function FoucsShow(obj,myList)
{
obj.focus(function(){myList.show()})
}
$.fn.createList=function(newoption)
{
$.extend(option,newoption);
Start($(this));
})(jQuery);
$("#d2").createList({
//数据源
data:[
{"value":"C#","text":"C#"},
{"value":".NET","text":".NET"},
{"value":"Java","text":"Java"},
{"value":"JSP","text":"JSP"},
{"value":"C","text":"C"},
{"value":"C++","text":"C++"},
{"value":"javascript","text":"javascript"},
{"value":"ajax","text":"ajax"},
{"value":"json","text":"json"},
{"value":"xml","text":"xml"},
{"value":"sql server","text":"sql server"},
{"value":"xml","text":"Mysql"},
{"value":"oracle","text":"oracle"},
{"value":"JQuery","text":"JQuery"},
{"value":"Ext js","text":"Ext js"},
{"value":"CSS3","text":"CSS3"},
{"value":"HTML5","text":"HTML5"}
]
});
$("#d3").createList();
})
