二级联动 三级联动 四级联动 多级联动

php thinkphp 实现二级联动 三级联动 四级联动 多级联动 附件带数据库 带选中。
如果不妥地方 欢迎指导，共同学习和进步。
分享是种美德。
页面：<script></script>

<script>//设置默认,页面加载时恢复默认选项。<br /> function region_default() {<br /> $("option[value=&#039;-1&#039;]").attr(&#039;selected&#039;, &#039;selected&#039;);<br /> }<br /> function setregion(num, address_id) {<br /> var next = num + 1;<br /> $.ajax({<br /> type: &#039;POST&#039;,<br /> //设置json格式,接收返回数组。<br /> dataType: &#039;json&#039;,<br /> url: &#039;&#039;,<br /> //ajax传递当前选项的value值,也就是当前的region_id。<br /> data: &#039;region_id=&#039; + $(&#039;#region_&#039; + num + &#039;_&#039; + address_id).val(),<br /> success: function(msg) {<br /> //如果返回值不为空则执行。<br /> if (msg != null) {<br /> var option_str = &#039;&#039;;<br /> //循环书写下一个select中要添加的内容。并添加name标记。<br /> for (var i = 0; i < msg.length; i++) {<br /> option_str+=&#039;<option name="region_&#039;+next+&#039;"value="&#039;+msg[i].id+&#039;">&#039;+msg[i].title+&#039;&#039;;<br /> }<br /> //删除下一个select中标记name为next的内容。<br /> $("option[name=&#039;region_" + next + "&#039;]").remove();<br /> //向下一个select中添加书写好的内容。<br /> $(&#039;#region_&#039; + next + &#039;_&#039; + address_id).append(option_str);<br /> } else {<br /> //如果返回值为空,则移除所有带标记的option,恢复默认选项。<br /> for (var i = next; i <= 4; i++) {<br /> $("option[name=&#039;region_" + i + "&#039;]").remove();<br /> }<br /> }<br /> }<br /> <br /> })<br /> }<br /> </script>
控制器：    /**
     * [labindex 多级联动]
     * @return [type] [description]
     */
    public function labindex(){
        //实验室地域
        $d=D('LabTypeRegion');
        if(IS_POST){
            if($_POST['region_id']){
                $region_id = $_POST['region_id'];
                $condition['pid'] = $region_id;
                $list = $d->where($condition)->select();
                // echo json_encode($list);
                $this->ajaxReturn($list);
            }
        }else{
            $condition['pid'] = array('neq',0);
            $condition['level'] = 1;
            $list = $d->where($condition)->select();
            $this->assign('list',$list);

        }
        //实验室地域

        $this->display();
    }

多级联动.zip ( 3.31 KB 下载：8 次 )