jQuery实现高级检索功能

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

  < dd >

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

    <option value= 'and' >与 </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"> 搜索</ button></ dd>  
   < dd> <a id = "multiSelect" href= "#"> 添加条件 </a ></dd >

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

< script type= "text/javascript" src="/UploadFiles/2021-04-02/jquery-1.7.2.min.js" ></ script >
< script type= "text/javascript" >
//用于动态修改新生成的节点id，便于定位子节点，为其添加事件
var conditionCount=1;

$(document).ready( function(){
  $( "#rangeend").hide();
  $( "#timerange").hide();
  $( "#condition").hide();
  //为初始节点添加事件
  selectClick( "0");
  //日期选择控件参数设置
  $( '#[id*=datetimepicker]').datetimepicker({
   format: 'yyyy-mm-dd',
   todayBtn: true,
   startView:4,
   minView:2,
   maxView:4,
   startView:4,
   todayHighlight: true,
   initialDate: new Date(),
   autoclose: true,  
  }); 
  //为“添加条件”添加事件
  $( "#multiSelect").click( function(event){
   var $nextrow=$( "#0").clone(); //克隆初始节点
   $nextrow.attr( "id",conditionCount); //修改复制的节点id，用于定位子节点
   $( "#lastrow").before($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);
   //为新插入的节点添加事件 
   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){
   /* 三个对象如果放在这里定义的话会出错，每个选择事件都会控制最下面一行的文本框的显示，如果在下面三个事件中分别添加这三行，则事件触发正常   
   $start=$("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>