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仿51job.com城市选择框特效(多项选择)

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>仿51job.com城市选择框特效</title>
<style type="text/css">
<!--
body{padding-top:50px;font-size:12px;}
h2{margin:0px;padding:0px;font-size:12px;font-weight:bold;}
.bton{border:1px solid #CCC;background:#DDD;}
.cont{padding:10px;}
#main{width:400px;margin:0px auto;}
#selectItem{background:#FFF;position:absolute;top:0px;left:center;border:1px solid #000;overflow:hidden;margin-top:10px;width:400px;z-index:2;}
#preview{margin:1px;border:1px solid #CCC;}
#result{border:1px solid #CCC;margin-top:10px;}
.tit{line-height:20px;height:20px;margin:1px;padding-left:10px;}
.bgc_ccc{background:#CCC;}
.bgc_eee{background:#eee;}
.c_999{color:#999}
.pointer{cursor:pointer;}
.left{float:left;}
.right{float:right;}
.cls{clear:both;font-size:0px;height:0px;overflow:hidden;}
#bg{background:#CCC;filter:alpha(opacity=70);opacity:0.7;width:100%;;position:absolute;left:0px;top:0px;display:none;z-index:1;}
.hidden{display:none;}
.move{cursor:move;}
-->
</style>
</head>
<body>
<div id="main">
  <input name="button" type="button" class="bton pointer" value="请选择" onclick="openBg(1);openSelect(1)"/>
  <div id="result">
  <div class="tit bgc_eee">
   <h2>您已选择的城市汇总</h2>
  </div>
  <div class="cont" id="makeSureItem">
  </div>
  </div>
</div>

<div id="bg">
</div>
<div id="selectItem" class="hidden">
  <div class="tit bgc_ccc move" onmousedown="drag(event,this)">
   <h2 class="left">请选择城市</h2>
   <span class="pointer right" onclick="openBg(0);openSelect(0);">[取消]</span>
   <span class="pointer right" onclick="makeSure();">[确定]</span>  
  </div>
  <div class="cls"></div>
  <div class="cont">
   <div id="selectSub">
    <select name="" onchange="showSelect(this.value)" style="margin-bottom:10px;">
     <option value="0">第0层</option>
     <option value="1">第1层</option>
     <option value="2">第2层</option>
     <option value="3">第3层</option>
    </select>
    <div id="c00">
     <input type="checkbox" name="ck00" onclick="addPreItem()" value="北京"/>北京
     <input type="checkbox" name="ck00" onclick="addPreItem()" value="福建"/>福建
     <input type="checkbox" name="ck00" onclick="addPreItem()" value="四川"/>四川
     <input type="checkbox" name="ck00" onclick="addPreItem()" value="江苏"/>江苏
    </div>
    <div id="c01">
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="上海"/>上海
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="云南"/>云南
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="贵州"/>贵州
    </div>
    <div id="c02">
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="黑龙江"/>黑龙江
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="吉林"/>吉林
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="辽宁"/>辽宁
    </div>
    <div id="c03">
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="美国"/>美国
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="阿富汗"/>阿富汗
     <input type="checkbox" name="ck01" onclick="addPreItem()" value="日本"/>日本
    </div>
   </div>
  </div>
  <div id="preview">
   <div class="tit bgc_eee c_999">
    <h2>您已选择的城市</h2>
   </div>
   <div class="cont" id="previewItem">
   </div>
  </div>
</div>

<script type="text/javascript">
/* ------使用说明----- */
/*
添加城市方法:
     添加组:找到id 是 "selectSub"中select标签下,添加option标签 value属性递增,找到 id 是 "selectSub",按照原有格式添加div,其id属性递增
添加二级傅选矿选项
  复制 id 是 "selectSub" 下任意input标签,粘贴在需要添加的位置。
*/
var grow = $("selectSub").getElementsByTagName("option").length; //组数
var showGrow = 0;//已打开组
var selectCount = 0; //已选数量
showSelect(showGrow);
var items = $("selectSub").getElementsByTagName("input");
//alert(maxItem);
//var lenMax = 2;
//alert(1);
function $(o){ //获取对象
if(typeof(o) == "string")
return document.getElementById(o);
return o;
}
function openBg(state){ //遮照打开关闭控制
if(state == 1)
{
  $("bg").style.display = "block";
  var h = document.body.offsetHeight > document.documentElement.offsetHeight ? document.body.offsetHeight : document.documentElement.offsetHeight;
//alert(document.body.offsetHeight);
//alert(document.documentElement.offsetHeight);
  $("bg").style.height = h + "px";
}
else
{
  $("bg").style.display = "none";
}
}
function openSelect(state){ //选择城市层关闭打开控制
if(state == 1)
{
  $("selectItem").style.display = "block";
  $("selectItem").style.left = ($("bg").offsetWidth - $("selectItem").offsetWidth)/2 + "px";
  $("selectItem").style.top = document.body.scrollTop + 100 + "px"; 
}
else
{
  $("selectItem").style.display = "none";
}
}
function showSelect(id){
for(var i = 0 ; i < grow ;i++)
{
  $("c0" + i).style.display = "none";
}
$("c0" + id).style.display = "block";
showGrow = id;
}
function open(id,state){ //显示隐藏控制
if(state == 1)
$(id).style.display = "block";
$(id).style.diaplay = "none";
}
function addPreItem(){
$("previewItem").innerHTML = "";
var len = 0 ;
for(var i = 0 ; i < items.length ; i++)
{
  if(items[i].checked == true)
  {
   //len++;
   //if(len > lenMax)
   //{
   // alert("不能超过" + lenMax +"个选项!")
   // return false;
   //}
   var mes = "<input type='checkbox' checked='true' value='"+ items[i].value +"' onclick='copyItem(\"previewItem\",\"previewItem\");same(this);'>" + items[i].value;
   $("previewItem").innerHTML += mes;
   //alert(items[i].value);
  }
}
}
function makeSure(){
//alert(1);
//$("makeSureItem").innerHTML = $("previewItem").innerHTML;
openBg(0);
openSelect(0);
copyItem("previewItem","makeSureItem")
}
function copyHTML(id1,id2){
$(id2).innerHTML = $("id1").innerHTML;
}
function copyItem(id1,id2){

var mes = "";
var items2 = $(id1).getElementsByTagName("input");
for(var i = 0 ; i < items2.length ; i++)
{
  if(items2[i].checked == true)
  {
   mes += "<input type='checkbox' checked='true' value='"+ items2[i].value +"' onclick='copyItem(\"" + id2+ "\",\""+ id1 +"\");same(this);'>" + items2[i].value;  
  }
}
$(id2).innerHTML = "";
$(id2).innerHTML += mes;
//alert($(id2).innerHTML);
}
function same(ck){
for(var i = 0 ; i < items.length ; i++)
{
  if(ck.value == items[i].value)
  {
   items[i].checked = ck.checked;
  }
}
}
/* 鼠标拖动 */
var oDrag = "";
var ox,oy,nx,ny,dy,dx;
function drag(e,o){
var e = e ? e : event;
var mouseD = document.all ? 1 : 0;
if(e.button == mouseD)
{
  oDrag = o.parentNode;
  //alert(oDrag.id);
  ox = e.clientX;
  oy = e.clientY; 
}
}
function dragPro(e){
if(oDrag != "")
{
  var e = e ? e : event;
  //$(oDrag).style.left = $(oDrag).offsetLeft + "px";
  //$(oDrag).style.top = $(oDrag).offsetTop + "px";
  dx = parseInt($(oDrag).style.left);
  dy = parseInt($(oDrag).style.top);
  //dx = $(oDrag).offsetLeft;
  //dy = $(oDrag).offsetTop;
  nx = e.clientX;
  ny = e.clientY;
  $(oDrag).style.left = (dx + ( nx - ox )) + "px";
  $(oDrag).style.top = (dy + ( ny - oy )) + "px";
  ox = nx;
  oy = ny;
}
}
document.onmouseup = function(){oDrag = "";}
document.onmousemove = function(event){dragPro(event);}
</script>
</body>
</html>
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