2016-01-30
參考
https://msdn.microsoft.com/en-us/library/system.web.httprequest.browser(v=vs.100).aspx
[ASP.NET][C#] Visual Studio 2015 實際測試
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { HttpBrowserCapabilities bc = Request.Browser; Response.Write("<p>Browser Capabilities:</p>"); Response.Write("Type = " + bc.Type + "<br>"); Response.Write("Name = " + bc.Browser + "<br>"); Response.Write("Version = " + bc.Version + "<br>"); Response.Write("Major Version = " + bc.MajorVersion + "<br>"); Response.Write("Minor Version = " + bc.MinorVersion + "<br>"); Response.Write("Platform = " + bc.Platform + "<br>"); Response.Write("Is Beta = " + bc.Beta + "<br>"); Response.Write("Is Crawler = " + bc.Crawler + "<br>"); Response.Write("Is AOL = " + bc.AOL + "<br>"); Response.Write("Is Win16 = " + bc.Win16 + "<br>"); Response.Write("Is Win32 = " + bc.Win32 + "<br>"); Response.Write("Supports Frames = " + bc.Frames + "<br>"); Response.Write("Supports Tables = " + bc.Tables + "<br>"); Response.Write("Supports Cookies = " + bc.Cookies + "<br>"); Response.Write("Supports VB Script = " + bc.VBScript + "<br>"); Response.Write("Supports JavaScript = " + bc.JavaScript + "<br>"); Response.Write("Supports Java Applets = " + bc.JavaApplets + "<br>"); Response.Write("Supports ActiveX Controls = " + bc.ActiveXControls + "<br>"); Response.Write("CDF = " + bc.CDF + "<br>"); } } } |
PS：Request.Browser.JavaScript is obselete (淘汰)？待研究
HttpCapabilitiesBase.JavaScript Property 已經被淘汰
https://msdn.microsoft.com/zh-tw/library/system.web.configuration.httpcapabilitiesbase.javascript(v=vs.110).aspx
PS：待研究
執行結果：
Browser Capabilities: Type = InternetExplorer11 Name = InternetExplorer Version = 11.0 Major Version = 11 Minor Version = 0 Platform = WinNT Is Beta = False Is Crawler = False Is AOL = False Is Win16 = False Is Win32 = True Supports Frames = True Supports Tables = True Supports Cookies = True Supports VB Script = False Supports JavaScript = True Supports Java Applets = False Supports ActiveX Controls = False CDF = False |
問題是，如果瀏覽器支援 JavaScript，但把它 Disable ，執行結果還是 True，無法分辨是 Enabled 或 Disabled。
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[ASP.NET][C#]檢查瀏覽器是否啟用 JavaScript
參考這篇
Detect if JavaScript is enabled in ASPX
http://www.codeproject.com/Articles/23831/Detect-if-JavaScript-is-enabled-in-ASPX
How To Check Is JavaScript Enabled
[ C# ]
protected void Page_Load(object sender, EventArgs e) { bool JavaScriptEnabled; if (Session["JavaScriptChecked"] == null) { Session["JavaScriptChecked"] = true; // call page again, but with CheckJavaScript=1 in query string Page.ClientScript.RegisterStartupScript(this.GetType(), "redirect", "window.location.href='" + Request.Url + "?CheckJavaScript=1" + "';", true); } if (Request.QueryString["CheckJavaScript"] == null) JavaScriptEnabled = false; else JavaScriptEnabled = true; } |
如果瀏覽器 JavaScript 是 Enabled，執行結果
如果瀏覽器 JavaScript 是 Disabled (有可能是不支援，或支援但沒啟用)，執行結果
文中提到 FireFox 不支援
Response.Write(@"<script language="'javascript'" type='text/jscript'>" +
@" window.location = 'default.aspx?JScript=1'; </script>");
IE, Firefox, Safari, Opera 都支援
Page.ClientScript.RegisterStartupScript(this.GetType(), "redirect",
"window.location.href="/KB/aspnet/default.aspx"?JScript=1';", true);
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[JavaScript] 檢查瀏覽器是否啟用 JavaScript，如果不支援 JavaScript，重導到別的網頁
參考這篇
Check If the JavaScript is Enabled on the Client's Browser
http://aspadvice.com/blogs/azamsharp/archive/2007/09/30/Check-If-the-JavaScript-is-Enabled-on-the-Client_2700_s-Browser.aspx
PS：XHTML 5 不支援 <noscript>
JavaScript is enabled |
如果瀏覽器 JavaScript 是 Disabled (有可能是不支援，或支援但沒啟用)，執行結果
JavaScript is disabled |
文中提到 FireFox 不支援
Response.Write(@"<script language="'javascript'" type='text/jscript'>" +
@" window.location = 'default.aspx?JScript=1'; </script>");
IE, Firefox, Safari, Opera 都支援
Page.ClientScript.RegisterStartupScript(this.GetType(), "redirect",
"window.location.href="/KB/aspnet/default.aspx"?JScript=1';", true);
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[JavaScript] 檢查瀏覽器是否啟用 JavaScript，如果不支援 JavaScript，重導到別的網頁
參考這篇
Check If the JavaScript is Enabled on the Client's Browser
http://aspadvice.com/blogs/azamsharp/archive/2007/09/30/Check-If-the-JavaScript-is-Enabled-on-the-Client_2700_s-Browser.aspx
<html> <head> <title>Untitled</title> <noscript><meta http-equiv="refresh" content="0; url=DefaultNoJavaScript.html"></noscript> </head> <body onload="checkJavaScriptValidity()"> <script language="javascript" type="text/javascript"> function checkJavaScriptValidity() { document.getElementById("jsEnabled").style.visibility = 'visible'; document.getElementById("jsDisabled").style.visibility = 'hidden'; } </script> <div id="jsEnabled" style="visibility:hidden"> JavaScript is enabled </div> <div id="jsDisabled"> JavaScript is disabled </div> |
PS：XHTML 5 不支援 <noscript>
http://www.w3schools.com/tags/tag_noscript.asp
In HTML 4.01, the <noscript> tag can only be used inside the <body> element.
In HTML5, the <noscript> tag can be used both inside <head> and <body>.
如果 <noscript> 放在 <head> 內， <noscript> 只能包含 <link> 、 <style> 、 <meta> 等元素。
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[ASP.NET][C#] 如果不支援 JavaScript，重導到別的網頁
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!Request.Browser.JavaScript) { Response.Redirect("DefalutNoJavaScript.aspx"); } } } } |
PS：Request.Browser.JavaScript is obselete (淘汰)？待研究
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[JavaScript] 如果不支援 JavaScript，重導到別的網頁
參考
How to determine whether Javascript is enabled?
http://therelentlessfrontend.com/2010/01/31/how-to-determine-whether-javascript-is-enabled/
<html> <head> <title>Untitled</title> <noscript><meta http-equiv=”refresh” content=”0; url=whatyouwant.html”></noscript> </head> <body> <form> <!–this javascript ensures that anybody that doesnt use javascript wont see the menu–> <script type=”text/javascript”> <!–hide script from older browsers document.write(‘<selectme=”whatever”><option>1</option><option>2</option></select>’); –> </script> </form> </body> </html> |
<body onload=”valid()”> <form id=”form1″ runat=”server”> <label Id=”lblWarning”>Your Browser has Disabled Scripting</label> </form> <script type=”text/jscript”> function valid() { var lbl=document.getElementById(‘lblWarning’); lbl.style.display = ‘none’; } </script> </body> |
相關
[研究][C#][ASP.NET][WebForm] 偵測瀏覽器類型(二)
http://shaurong.blogspot.com/2017/03/caspnetwebform.html
[研究][C#][ASP.NET][WebForm] 偵測瀏覽器類型(一)
http://shaurong.blogspot.com/2017/01/caspnet.html
[研究] 檢查瀏覽器 JavaScript是否支援？是否啟用？
http://shaurong.blogspot.com/2016/01/aspnetc-javascript.html
http://shaurong.blogspot.com/2017/03/caspnetwebform.html
[研究][C#][ASP.NET][WebForm] 偵測瀏覽器類型(一)
http://shaurong.blogspot.com/2017/01/caspnet.html
[研究] 檢查瀏覽器 JavaScript是否支援？是否啟用？
http://shaurong.blogspot.com/2016/01/aspnetc-javascript.html
How To Check Is JavaScript Enabled
如何檢查使用者的瀏覽器是否關閉JavaScript和Cookie?
JavaScript Detection in ASP.NET
Check If the JavaScript is Enabled on the Client's Browser (使用JavaScript)
HOW TO：在 ASP.NET Web 網頁中偵測瀏覽器類型
[javascript]取得瀏覽器資訊
HttpCapabilitiesBase.EcmaScriptVersion 屬性
https://msdn.microsoft.com/zh-tw/library/system.web.configuration.httpcapabilitiesbase.ecmascriptversion(v=vs.110).aspx
