knockoutjs+ jquery pagination+asp.net web Api 实现无刷新列表页
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内容图文
Knockoutjs 是一个微软前雇员开发的前端MVVM JS框架, 具体信息参考官网 http://knockoutjs.com/
Web API数据准备： 偷个懒数据结构和数据copy自官网实例 http://www.asp.net/web-api/overview/getting-started-with-aspnet-web-api/tutorial-your-first-web-api
using
System.Collections.Generic;
using
System.Linq;
using
System.Web.Http;
namespace
WebApp.Api
{
public
class
Product
{
public
int Id { get; set; }
publicstring Name { get; set; }
publicstring Category { get; set; }
publicdecimal Price { get; set; }
}
publicclass TestController : ApiController
{
Product[] products = new Product[]
{
new Product { Id = 1, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
new Product { Id = 2, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
new Product { Id = 3, Name = "Hammer", Category = "Hardware", Price = 16.99M },
new Product { Id = 4, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
new Product { Id = 5, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
new Product { Id = 6, Name = "Hammer", Category = "Hardware", Price = 16.99M } ,
new Product { Id = 7, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
new Product { Id = 8, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
new Product { Id = 9, Name = "Hammer", Category = "Hardware", Price = 16.99M },
new Product { Id = 10, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
new Product { Id = 11, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
new Product { Id = 12, Name = "Hammer", Category = "Hardware", Price = 16.99M },
new Product { Id = 13, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
new Product { Id = 14, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
new Product { Id = 15, Name = "Hammer", Category = "Hardware", Price = 16.99M } ,
new Product { Id = 16, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
new Product { Id = 17, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
new Product { Id = 18, Name = "Hammer", Category = "Hardware", Price = 16.99M }
};
[Route("api/getpagecount")]
[HttpGet]
publicint GetCount()
{
return products.Length;
}
[Route("api/getdata")]
[HttpGet]
public IEnumerable<Product> GetProduct(int pageIndex, int pageSize)
{
return products.Skip(pageIndex * pageSize).Take(pageSize);
}
}
}
上述就是web api数据源和两个供前端调用分页的接口
JS 交互代码如下
; ( function ( ko ) { var pageSize = 10, viewModel, isBind = false; function loadTable( pageIndex ) { $.ajax( { url: ‘/api/getdata?pageIndex=‘+pageIndex+‘&pageSize=‘+pageSize, type: ‘GET‘, contentType: "application/json; charset=utf-8", success: function ( r ) { if ( !isBind ) { viewModel = ko.mapping.fromJS( r ); isBind = true; ko.applyBindings( viewModel ); } else { ko.mapping.fromJS( r, viewModel ); } } } ); } initPager(); function initPager() { var getCountUrl = ‘/api/getpagecount‘; $.ajax( { url: getCountUrl, type: ‘GET‘, contentType: "application/json; charset=utf-8", success: function ( r ) { $( ‘#pager‘ ).pagination( r, { callback: function ( currentPageIndex ) { loadTable( currentPageIndex ); } } ); } } ); } } )( ko );
一个立即自执行函数 传入ko全局变量 ， 函数里面定义了两个函数， initPager用于从server端取得商品数量并初始化pagination插件,pagination插件绑定点击页码时的回调函数，这里使用了默认的pagination设置,每页显示 10个商品。loadTable用于从server端取得分页数据，接收一个参数用于指定当前获取第几页数据，数据获取成功，用ko.applyBindings绑定到页面渲染显示模板数据.注意这里为了偷懒使用了knockout的 mapping插件，具体用法请参考 http://knockoutjs.com/documentation/plugins-mapping.html。
html页面代码如下
@{
ViewBag.Title = "Test";
}
<
style
>
.pagination
{
font-size
:
80%
;
}
.pagination a
{
text-decoration
:
none
;
border
:
solid 1px #AAE
;
color
:
#15B
;
}
.pagination a, .pagination span
{
display
:
block
;
float
:
left
;
padding
:
0.3em 0.5em
;
margin-right
:
5px
;
margin-bottom
:
5px
;
}
.pagination .current
{
background
:
#26B
;
color
:
#fff
;
border
:
solid 1px #AAE
;
}
.pagination .current.prev, .pagination .current.next
{
color
:
#999
;
border-color
:
#999
;
background
:
#fff
;
}
</
style
>
<
table
class
="table table-hover"
id
="dataTable"
>
<
thead
>
<
tr
>
<
th
>
Id
</
th
>
<
th
>
Name
</
th
>
<
th
>
Category
</
th
>
<
th
>
Price
</
th
>
</
tr
>
</
thead
>
<
tbody
data-bind
="foreach:$root"
>
<
tr
>
<
td
data-bind
="text:Id"
></
td
>
<
td
data-bind
="text:Name"
></
td
>
<
td
data-bind
="text:Category"
></
td
>
<
td
data-bind
="text:Price"
></
td
>
</
tr
>
</
tbody
>
</
table
>
<
div
>
<
div
id
="pager"
class
="pagination"
>
</
div
>
</
div
>
@section scripts{
<
script
src
="~/Scripts/jquery.pagination.js"
></
script
>
<
script
src
="~/Scripts/knockout-3.2.0.js"
></
script
>
<
script
src
="~/Scripts/knockout.mapping-latest.js"
></
script
>
<
script
src
="~/Scripts/list.js"
></
script
>
}
上面的js逻辑代码文件为list.js , 为了偷懒直接把pagination的样式copy到了html头部。
运行结果
原文：http://www.cnblogs.com/leonwang/p/4846187.html
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