Javascript 讀取Cookie

2008-05-28

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ASP.NET

Javascript 讀取Cookie

今天在論壇上看到文章，就看一下文件來操作

Step 1：我先在畫面放2個Button，一個是產生Cookie，另一個則是接收Cookie


<asp:Button ID="Button1" runat="server" Text="Generate" />
        <asp:Button ID="Button2" runat="server" Text="Get" OnClientClick="checkCookie()" />

Step 2：我在Button1 事件產生幾個cookie出來


Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        
        Response.Cookies("wxvbbo")("id") = "wxvbbo"
        Response.Cookies("wxvbbo")("blog") = "dotblogs"
        Response.Cookies("wxvbbo").Expires = DateTime.Now.AddDays(1)
    End Sub

Step3：在checkCookie的Script裡撰寫相關的程式


<script language="javascript" type="text/javascript">

    function checkCookie()
    {
        username=getCookie('id');
        receive_page=getCookie('blog')
        alert(username);
        alert(receive_page);
    }

    function getCookie(c_name)
    {
    if (document.cookie.length>0)
      {
      c_start=document.cookie.indexOf(c_name + "=");
      if (c_start!=-1)
        { 
        c_start=c_start + c_name.length+1 ;
        c_end=document.cookie.indexOf("&",c_start);
        if (c_end==-1) c_end=document.cookie.length
        return unescape(document.cookie.substring(c_start,c_end));
        } 
      }
    return ""
    }

    </script>

畫面應該會長的像醬子

reference

Javascript Cookies

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