<!DOCTYPE html><html lang="zh-CN"><head><meta charset="UTF-8"><title>测试</title><?php ????$chk = array(‘ch1‘,‘ch3‘,‘ch5‘); //后台获取checkbox选中id的数组 ???$slt = ‘iph‘; ???????????????????//后台获取select选中option的value?><script type="text/javascript" src="//upcdn.b0.upaiyun.com/libs/jquery/jquery-1.8.3.min.js"></script><script type="text/javascript">$(function(){ ???var chkData = <?php echo json_encode($chk);?>; ???var sltData = ‘<?php echo $slt;?>‘; ???$(‘.chk‘).each(function(){ ???????var self = $(this); ???????var selfId = self.attr(‘id‘); ???????$.each(chkData, function(n, v){ ???????????if(v == selfId) self.attr(‘checked‘ , ‘true‘); ???????}); ???}); ???$(‘#select option‘).each(function(){ ???????var self = $(this); ???????var selfVal = self.val(); ???????if(selfVal == sltData) self.attr(‘selected‘ , ‘true‘); ???});});</script></head><body> ???<p><input id="ch1" class="chk" type="checkbox" value="111">111</p> ???<p><input id="ch2" class="chk" type="checkbox" value="222">222</p> ???<p><input id="ch3" class="chk" type="checkbox" value="333">333</p> ???<p><input id="ch4" class="chk" type="checkbox" value="444">444</p> ???<p><input id="ch5" class="chk" type="checkbox" value="555">555</p> ???<div class="selectAera"> ???????<select id="select"> ???????????<option value="smt">锤子</option> ???????????<option value="iph">苹果</option> ???????????<option value="xm">小米</option> ???????????<option value="nka">诺基亚</option> ???????</select> ???</div></body></html>后台返回数据回显，使用js控制默认选中复选框和下拉框
原文地址：http://www.cnblogs.com/jackduan/p/7742092.html