CI框架（ajax分页，全选，反选，不选，批量删除）

//ajax分页+搜索（视图层）

function ajax_page(page){

var sou = $('#sou').val();

$.ajax({

type: "POST",

dataType: "json",

url: "<?PHP echo site_url('Welcome/ajax_page')?>",

data: "page="+page+"&sou="+sou,

success: function(data){

var str="";

str+="<table border='1' style='text-align:center'>";

str+="<tr>";

str+="<td><input type='checkbox' class='quan'/></td>";

str+="<td>ID</td>";

str+="<td>用户名</td>";

str+="<td>操作</td>";

str+="</tr>";

$.each(data.list,function(i,item){

if(item.state==0){

var locks = "<a href='JavaScript:void(0)' class='lok' fla='"+item.id+"'
id='lock"+item.id+"'>未锁定</a>"

}else{

var locks = "<a href='javascript:void(0)' class='lok' fla='"+item.id+"' id='lock"+item.id+"'>锁定</a>"

}

str+="<tr id='av"+item.id+"'>";

str+="<td><input type='checkbox' class='ss' value='"+item.id+"'/></td>";

str+="<td>"+item.id+"</td>";

str+="<td>"+item.name+"</td>";

str+="<td>"+locks+"</td>";

str+="</tr>";

})

str+="<tr>";

str+="<td><input type='button' id='pdel' value='批量删除'></td>"

str+="</tr>";

str+="</table>";

str+=data.pagestr;

$('#content').html(str);

}

})

}

//状态切换

$(document).on('click','.lok',function(){

var id = $(this).attr('fla');

$.ajax({

type: "POST",

url: "<?php echo site_url('Welcome/upds')?>",

data: "id="+id,

success: function(msg){

if(msg==1){

$('#lock'+id).html("锁定");

}else{

$('#lock'+id).html("未锁定");

}

}

})

})

//批量删除
$(document).on('click','#pdel',function(){

var ids = $('.ss');

var str="";

$.each(ids,function(i,item){

if(ids[i].checked==true){

str=str+','+ids[i].value;

}

})

var new_str=str.substr(1);

$.ajax({

type: "POST",

url: "<?php echo site_url('Welcome/pdels')?>",

data: "new_str="+new_str,

success: function(msg){

$.each(ids,function(i,item){

if(ids[i].checked==true){

$('#av'+ids[i].value).remove();

}

})

}

})

})

//全选(复选框)

$(document).on('click','.quan',function(){

var obj = $(':checkbox');

var ids = $('.ss');

if(obj[0].checked==true){

$.each(ids,function(i,item){

ids[i].checked=true;

})

}else{

$.ea
4000
ch(ids,function(i,item){

ids[i].checked=false;

})

}

})

<td><input type="checkbox" class="checks" value="<?php echo $val['u_id']?>"/></td>

//全选（按钮）

$('.quan').click(function(){

var ids = $('input:checkbox');

$.each(ids,function(i,item){

ids[i].checked=true;

})

})
//全不选
$('.bu').click(function(){

var ids = $('input:checkbox');

$.each(ids,function(i,item){

ids[i].checked=false;

})

})
//反选

$('.fan').click(function(){

var ids = $('.checks');

$.each(ids,function(i,item){

ids[i].checked=!ids[i].checked;

})

})

//即点即改

$(document).on('click','.ss',function(){

var id = $(this).attr('id');

var con = $(this).text();

$(this).parent().html("<input type='text' id='"+id+"' class='aa' value='"+con+"'>");

$('.aa').val('').focus().val(con);

$(document).on('blur','.aa',function(){

var id = $(this).attr('id');

var cons = $(this).val();

$(this).parent().html("<span id='"+id+"' class='ss'>"+cons+"</span>");

$.ajax({

type: "POST",

url: "<?php echo site_url('Welcome/upd_ji')?>",

data: "id="+id+"&cons="+cons

})

})

})

//导出

$(document).on('click','#chu',function(){

var sou = $('#sou').val();

location.href="<?php echo site_url('excel/export')?>?sou="+sou;

})

//ajax分页（控制层）
public function ajax_page(){

$sou = $this->input->post('sou');

$count = $this->db->where("name like '%$sou%'")->count_all_results("peng");

$number = 3;

$this->session->set_userdata('number',$number);

$pagecount = ceil($count/$number);

@$page = $_POST['page']?$_POST['page']:1;

$this->session->set_userdata('page',$page);

$start = ($page-1)*$number;

$arr['list'] = $this->db->where("name like '%$sou%'")->limit($number,$start)->get("peng")->result_array();

$up_page = $page-1<1?1:$page-1;

$down_page = $page+1>$pagecount?$pagecount:$page+1;

$str = "";

$str .= "<a href='javascript:void(0)' onclick='ajax_page($up_page)'>上一页</a>";

for($i=1;$i<=$pagecount;$i++){

if($i==$page){

$str .= "--"."<b>$i</b>";

}else{

$str .= "--"."<a href='javascript:void(0)' onclick='ajax_page($i)'>$i</a>";

}

}

$str .= "--"."<a href='javascript:void(0)' onclick='ajax_page($down_page)'>下一页</a>";

$arr['pagestr'] = $str;

echo json_encode($arr);

}

//状态切换

public function upds(){

$id = $this->input->post('id');

$arr = $this->db->get_where("peng","id='$id'")->row_array();

if($arr['state']==0){

$data['state']=1;

$this->db->where("id='$id'")->update("peng",$data);

echo "1";

}else{

$data['state']=0;

$this->db->where("id='$id'")->update("peng",$data);

echo "2";

}

}

//批量删除
public function pdels(){

$str = $this->input->post('new_str');

$this->db->where("id in($str)")->delete("peng");

}