初學JQuery，寫了一個高階檢索的動態輸入框，如圖所示：

實現的功能：

* 當選擇屬性下拉框中不同型別（字串、數字、日期）的屬性時，後面彈出不同數量的和不同格式的文字框（字串彈出一個輸入文字框，數字型的彈出兩個輸入文字框，日期型的彈出兩個日期選擇控制元件）；
* 單擊“新增條件”連結後，下面會增加一行條件輸入，可以選擇邏輯（與、或、非）、屬性。

html部分程式碼如下：

< div id= "0" class ="row" >   

     < dd >

          <select id = "condition" class= "span2"
 
 style = 'width:110px;' >                                  

               <option value= 'and' >與 </option >

               <option value = 'or'> 或</ option>

               <option value= 'not' >非 </option >                              

          </select >

     </dd >                      

     < dd >< select id= "attrlist"
 
 class= "span2" style = 'width:110px;'  >

          <s:iterator value= "equipAttrs" id ="attrs" >                                        

               <option value= '< s:property value= "#attrs[2]" />' ><s:property value= "#attrs[1]" /></option >

          </s:iterator >                                   

     </select ></dd >

     < dd> <input id = "rangestart"
 
 type= "text" class = "span2 search-query"></ dd>                           


     < dd> <div id = "rangeend"> --< input type= "text" class = "span2 search-query" ></div ></dd >

     < dd> <div id = "timerange">< input type= "text"   id = "datetimepicker1">
                                --
     <input type = "text" id= "datetimepicker2" >

     </div ></dd >

     <div id = "clickgroup">

          < dd> <button id = "searchButton" type= "submit" class = "btn"> 搜尋</ button></ dd>     

          < dd> <a id = "multiSelect" href= "#"> 新增條件 </a ></dd >

     </div >                     

</div >     

< div id= "lastrow" ></div >

JQuery程式碼：

< script type= "text/javascript" src= "js/jquery-1.7.2.min.js" ></ script >
< script type= "text/javascript" >
//用於動態修改新生成的節點id，便於定位子節點，為其新增事件
var conditionCount=1;

$(document).ready( function(){
     $( "#rangeend").hide();
     $( "#timerange").hide();
     $( "#condition").hide();
      //為初始節點新增事件
     selectClick( "0");
      //日期選擇控制元件引數設定
     $( '#[id*=datetimepicker]').datetimepicker({
         format: 'yyyy-mm-dd',
         todayBtn: true,
         startView:4,
         minView:2,
         maxView:4,
         startView:4,
         todayHighlight: true,
         initialDate: new Date(),
         autoclose: true,     
     });  
      //為“新增條件”新增事件
     $( "#multiSelect").click( function(event){
            var $nextrow=$( "#0").clone(); //克隆初始節點
           $nextrow.attr( "id",conditionCount); //修改複製的節點id，用於定位子節點
           $( "#lastrow").before($nextrow);
           $( "#"+conditionCount+ " select[id='condition']").show();
           $( "#"+conditionCount+ " input[id='rangestart']").show();
           $( "#"+conditionCount+ " div[id='rangeend']" ).hide();
           $( "#"+conditionCount+ " div[id='timerange']" ).hide();
           $( "#"+conditionCount+ " div[id='clickgroup']" ).hide();
            var $t1=$( "#"+conditionCount+ " div[id='timerange']").children();
            var at=$t1.attr( "id");
           $t1.attr( "id",at+ ""+conditionCount);
           $t1=$t1.next();
            var at1=$t1.attr( "id");
           $t1.attr( "id",at1+ ""+conditionCount);
            //為新插入的節點新增事件   
           selectClick(conditionCount);
           conditionCount++;

           $( '#[id*=datetimepicker]').datetimepicker({
               format: 'yyyy-mm-dd',
               todayBtn: true,
               startView:4,
               minView:2,
               maxView:4,
               startView:4,
               todayHighlight: true,
               initialDate: new Date(),
               autoclose: true,     
           });  

     });
});


      function selectClick(flag){
            /* 三個物件如果放在這裡定義的話會出錯，每個選擇事件都會控制最下面一行的文字框的顯示，如果在下面三個事件中分別新增這三行，則事件觸發正常         
           $start=$("div[id="+flag+"]>dd>input[id='rangestart']");
           $end=$("div[id="+flag+"]>dd>div[id='rangeend']");
           $time=$("div[id="+flag+"]>dd>div[id='timerange']"); */
          $( "#"+flag+ ">dd>select[id='attrlist']>option[value*='Date']" ).click( function(){
                $start=$( "div[id="+flag+ "]>dd>input[id='rangestart']" );
                $end=$( "div[id="+flag+ "]>dd>div[id='rangeend']" );
                $time=$( "div[id="+flag+ "]>dd>div[id='timerange']" );
                $start.hide();
                $end.hide();
                $time.show();
           });
          $( "#"+flag+ ">dd>select[id='attrlist']>option[value*='String']" ).click( function(){
                $start=$( "div[id="+flag+ "]>dd>input[id='rangestart']" );
                $end=$( "div[id="+flag+ "]>dd>div[id='rangeend']" );
                $time=$( "div[id="+flag+ "]>dd>div[id='timerange']" );
                $start.show();
                $end.hide();
                $time.hide();
           });
          $( "#"+flag+ ">dd>select[id='attrlist']>option[value*='Float']" ).click( function(){
                $start=$( "div[id="+flag+ "]>dd>input[id='rangestart']" );
                $end=$( "div[id="+flag+ "]>dd>div[id='rangeend']" );
                $time=$( "div[id="+flag+ "]>dd>div[id='timerange']" );
                $start.show();
                $end.show();
                $time.hide();
           });
     }

</ script>