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
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using System;
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using System.Collections.Generic;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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namespace WebApplication_TestJS
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{
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public partial class _Default : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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Response.Cookies["DONO"].Value = "EDO1406300001";
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Response.Cookies["DOID"].Value = "ABCDEFG123456";
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Response.Cookies["DOSOURCE"].Value = "WUWUWUWU";
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Response.Cookies["DOTYPE"].Value = "2";
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}
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}
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}
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
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication_TestJS._Default" %>
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function GetCookie()
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{
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/*获取Cookies里面存放信息 了解其字符串结构*/
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var Cookies = document.cookie;
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document.getElementById("<%=txtContent.ClientID%>").innerText = Cookies;
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/*处理字符串截取出来需要的目标值*/
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var target = "DONO" + "=";
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if (document.cookie.length > 0)
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{
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start = document.cookie.indexOf(target);
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if (start != -1)
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{
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start += target.length;
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end = document.cookie.indexOf(";", start);
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if (end == -1) end = document.cookie.length;
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}
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}
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/*目标值赋值给控件*/
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document.getElementById("<%=txtTarget.ClientID%>").innerText = document.cookie.substring(start, end);
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}
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3.执行结果,可以看到Cookies根据需要截取相应字符串即可
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