jquery实现二级联动
作者：zccst
<script type="text/javascript">$(document).ready(function(){var src = "<?php$str = '';foreach($reasons as $r){$str .= '[' . $r->pid . ',' . $r->id . ',' . "'{$r->content}'" .'],';}$str = substr($str, 0, strlen($str) - 1);echo $str;?>";src = '[' + src + ']';src = eval(src);var level1 = $("#os_is_timeout_reason");var level2 = $("#os_is_timeout_reason2");level1.change(function(){var html = "";for (var i = 0; i < src.length; i++){if( src[i][0] == level1.val()){html += '<option value='+src[i][1]+'>'+src[i][2]+'</option>';}else if( 0 == level1.val()){html = '<option>--请选择子原因--</option>';}}level2.html(html);});});</script><?php //var_dump($reasons); ?><select id="os_is_timeout_reason"><option value="0">--请选择原因--</option><?php foreach($reasons as $r){ if($r->pid == 0){?><option value="<?php echo $r->id; ?>"><?php echo $r->content; ?></option><?php }} ?></select><select id="os_is_timeout_reason2"><option>--请选择子原因--</option></select>