Ajax实现列表无限加载和二级下拉选项效果

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__"https://www.jb51.net/article/+"?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='"https://www.jb51.net/article/+"__WEB__"https://www.jb51.net/article/+"?a=Index&amp;c=Index&amp;m=content&amp;mid=1&amp;cid=33&amp;aid="+info[key]['aid']+""https://www.jb51.net/article/+"'><h3>"+info[key]['title']+"</h3><p>"+info[key]['description']+"</p><span></span></a>"; $('div.zizhiListContBox').append(oStr); }; }); }); })(); </script>

Ajax 做二级选项：

<!-- 示例：HTML --> <dl > <dt>科室：</dt> <dd> <select> <option value='0'>--请选择科室--</option> </select> <select> <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__"https://www.jb51.net/article/+"?a=Index&c=Index&m=ajaxlanmu"; var zhuanjiaUrl = "__WEB__"https://www.jb51.net/article/+"?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>