Js获取Cookies存放的值

来源：互联网发布：一千零一夜淘宝出品编辑：程序博客网时间：2024/06/05 05:52

工作过程中遇到一个Js从Cookies里面取值的需求，Js貌似没有现成的方法可以指定Key值获取Cookie里面对应的值，参阅网上的代码，简单实现如下：

1. 服务端代码，Page_Load里面Cookies写入几个值

using System;using System.Collections.Generic;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace WebApplication_TestJS{    public partial class _Default : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            Response.Cookies["DONO"].Value = "EDO1406300001";            Response.Cookies["DOID"].Value = "ABCDEFG123456";            Response.Cookies["DOSOURCE"].Value = "WUWUWUWU";            Response.Cookies["DOTYPE"].Value = "2";        }    }}

2. 客户端代码，页面添加按钮和文本框，用于触发和输出获取到的值

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication_TestJS._Default" %><html><script language="javascript" type="text/javascript">    function GetCookie()     {        /*获取Cookies里面存放信息  了解其字符串结构*/        var Cookies = document.cookie;        document.getElementById("<%=txtContent.ClientID%>").innerText = Cookies;        /*处理字符串截取出来需要的目标值*/        var target = "DONO" + "=";        if (document.cookie.length > 0)         {            start = document.cookie.indexOf(target);            if (start != -1)             {                start += target.length;                end = document.cookie.indexOf(";", start);                if (end == -1) end = document.cookie.length;            }        }        /*目标值赋值给控件*/        document.getElementById("<%=txtTarget.ClientID%>").innerText = document.cookie.substring(start, end);    }</script><head runat="server">    <title></title></head><body>    <form id="form1" runat="server">    <div>        <asp:Button ID="btnGetReq" runat="server" Text="获取内容" OnClientClick="GetCookie()" />        <br />        <asp:TextBox ID="txtContent" runat="server" Columns="120"></asp:TextBox>        <br />        <asp:TextBox ID="txtTarget" runat="server" Columns="120"></asp:TextBox>    </div>    </form></body></html>

3.执行结果，可以看到Cookies就是如第一个文本框中存放结构，根据需要截取相应字符串即可

0 0