Simple implementation of js getting values from Cookies_javascript skills-JS Tutorial-php.cn

Simple implementation of js getting values from Cookies_javascript skills

WBOY

Release： 2016-05-16 16:42:41

Original

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During the work process, I encountered a need for JS to obtain values from Cookies. It seems that there is no ready-made method for JS to specify the Key value to obtain the corresponding value in Cookie. Please refer to the code on the Internet. The simple implementation is as follows:

1. Server-side code, write several values in Cookies in Page_Load

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"; 
} 
} 
}

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2. Client code, add buttons and text boxes to the page, used to trigger and output the obtained value

<%@ 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>

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3. From the execution result, you can see that Cookies is the structure stored in the first text box. You can intercept the corresponding string as needed

Simple implementation of js getting values ​​from Cookies_javascript skills

Simple implementation of js getting values from Cookies_javascript skills