Ajax实现列表无限加载和二级下拉选项效果

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Ajax做列表无限加载和Ajax做二级下拉选项，供大家参考，具体内容如下

//栏目Ajax做加载public function ajaxlist(){ //echo "http://www.域名.com/index.php?a=Index&c=Index&m=ajaxlist"; //echo "<hr>"; $data = Q('sum'); $where = array(); $where['cid'] = 33; $rongyuList = M('content')->limit($data,2)->where($where)->select(); $data['stat'] = 1; $data = $rongyuList; $this->ajax($data); //也可以手动把想要的字段拼接成字符串  /*echo "["; foreach($rongyuList as $k){  echo "{"."\""."title"."\"".":"."\"".$k['title']."\"".","."\""."description"."\"".":"."\"".$k['description']."\"".","."\""."cid"."\"".":"."\"".$k['cid']."\""."}".",";   } echo "]";*/ }

具体页面实现：

<script type='text/javascript'>/*ajax*/(function(){//发送数据 var url = "__WEB__"+"?a=Index&c=Index&m=ajaxlist";var oSum = ''; $('a.ajaxBut').click(function(){ oSum = $('div.zizhiListContBox>a').size(); $.post(url,{sum:oSum},function(result){ console.log(result); eval("var info="+result); for(var key in info){   oStr = "<a href='//article/"+"__WEB__"+"?a=Index&c=Index&m=content&mid=1&cid=33&aid="+info[key]['aid']+""+"'><h3 class='f100 f16 ts500'>"+info[key]['title']+"</h3><p>"+info[key]['description']+"</p><span class='b parb'></span></a>";   $('div.zizhiListContBox').append(oStr); }; });});})();</script>

Ajax 做二级选项：

<!-- 示例：HTML --><dl class="pr keshi" > <dt class="pa">科室：</dt> <dd class="pa">  <select name='keshi' class='m_keshi'>   <option value='0'>--请选择科室--</option>  </select>  <select name='zhuanjia' class='m_zhuanjia'>   <option>--请选择专家--</option>  </select> </dd></dl>

示例控制器：

//示例控制器/* Ajax请求栏目列表 */public function ajaxlanmu(){ $lanmuList = M('category')->where('pid=142')->select(); $this->ajax($lanmuList);}public function ajaxzhuanjia(){ $where = array(); $data = Q('sum'); $data = $data ? $data : 143; $where['cid'] = $data; $zhuanjiaList = M('guahao')->where($where)->select(); $this->ajax($zhuanjiaList);}

示例：JS

<script>(function(){var lanmuUrl = "__WEB__"+"?a=Index&c=Index&m=ajaxlanmu";var zhuanjiaUrl = "__WEB__"+"?a=Index&c=Index&m=ajaxzhuanjia";var oSum = oStr = oStr2 = oVal = oKong = info2 = oCid = '';/* lanmu */$.post(lanmuUrl,function(result){ eval("var info="+result); for(var key in info){oStr += "<option value='"+info[key]['catname']+"' cid='"+info[key]['cid']+"'>"+info[key]['catname']+"</option>";}; $('dl.keshi').find('select.m_keshi').append(oStr);});/* zhuanjia */$('dl.keshi').find('select.m_keshi').change(function(){ oVal = $(this).find('option:selected').val(); if(oVal == 0){  $('dl.zhuanjia').find('select.m_zhuanjia').html("<option>--请选择专家--</option>"); }else{  oCid = $(this).find('option:selected').attr('cid');  $.post(zhuanjiaUrl,{sum:oCid},function(result){   eval("info2="+result);   oStr2 = '';//注意这里要清空第一次请求的数据   for(var key2 in info2){    oStr2 += "<option value='"+info2[key2]['title']+"'>"+info2[key2]['title']+"</option>";       };   $('dl.zhuanjia').find('select.m_zhuanjia').html(oStr2);  }); };});})();</script>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。