比较经典的Jquery代码

  var d=0;
  var e=1;
  function getRow(g,h){
 var i="<tr id='row_"+g+"'>"+"<td align='center'>"+h+"</td>"+"<td align='center'><input name='iss_prodname[]' type='text' id='iss_prodname_"+g+"' size='17' value='请输入关键字或空格' style='color:#CCC' οnfοcus='clearTip(this)'  οnblur='fillTip(this)'/></td>"+"<td align='center'><input type='text' id='iss_cate_name_"+g+"' size='10' disabled='disabled'/></td>"+"<td align='center'><input name='iss_price[]' type='text' id='iss_price_"+g+"' size='8' /></td>"+"<td align='center'><input name='iss_count[]' type='text' id='iss_count_"+g+"' size='8' οnblur='compute("+g+")'/></td>"+"<td align='center'><input name='iss_total[]' type='text' id='iss_total_"+g+"' size='8'/></td>"+"<td align='center'>"+"<select name='iss_store[]' id='iss_store_"+g+"'>"+"<option value=''>--请选择--</option>"+"</select>"+"</td>"+"<td align='center'><input name='iss_remark[]' type='text' id='iss_remark' size='25' /></td>"+"<td align='center'><a href='#' id='linkDelete_"+g+"' name='linkDelete' οnclick='deleteRow("+g+")'>删除</a></td>"+"<input name='row_count[]' type='hidden' value='"+g+"'>"+"<input id='iss_cate_id_"+g+"' name='iss_cate[]' type='hidden'>"+"<input id='iss_prod_"+g+"' name='iss_prod[]' type='hidden'>"+"</tr>";
  return i
  };
  
  $("#btnAdd").click(function(){
 var g=getRow(d,e);
 $("#table").append(g);
 bindAutoComplete(d);
 bindStore(d);
 d++;
 e++});
 
  function bindStore(g){
 $.getJSON('./index.php?s=/InstoreBook/getStore',function(h){$.each(h,function(i,j){$('#iss_store_'+g).append("<option value='"+j.sto_id+"'>"+j.sto_name+"</option>")})})};
  
  function deleteRow(g){
 $("#row_"+g).remove();
   e--};
  
  function checkName(g){
 $.get("./index.php?s=/InstoreBook/checkName/name/"+g,function(h){if(h=="no_exist"){alert("不存在此产品，请修改！")}})};
 
  function clearTip(g){
 if($(g).val()=='请输入关键字或空格'){$(g).attr('style','color:#000');
   $(g).val('')}};
 
  function fillTip(g){if($(g).val()==''){$(g).attr('style','color:#CCC');
   $(g).val('请输入关键字或空格')}};
  
  function compute(g){
 $("#iss_total_"+g).val($("#iss_price_"+g).val()*$("#iss_count_"+g).val())};
 $.widget("custom.catcomplete",$.ui.autocomplete,{_renderMenu:function(g,h){var i=this,j="";
 $.each(h,function(k,l){if(l.category!=j){g.append("<li class='ui-autocomplete-category'>"+l.category+"</li>");
      j=l.category};
      i._renderItem(g,l)})}});
  
  function bindAutoComplete(g){
 $("#iss_prodname_"+g).catcomplete({source:'./index.php?s=/InstoreBook/getProduct',minLength:1,delay:0,select:function(h,i){$("#iss_prod_"+g).val(i.item.prod_id);
  $("#iss_prodname_"+g).val(i.item.prod_name);
  $("#iss_price_"+g).val(i.item.prod_price);
  $("#iss_count_"+g).val(1);
  $("#iss_total_"+g).val(i.item.prod_price);
  $("#iss_cate_id_"+g).val(i.item.prod_cate);
  $("#iss_cate_name_"+g).val(i.item.pdca_name)}})};


  $(".btn").button();