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檢測是否已安裝 .NET Framework 3.5的js腳本

更新時間：2009年02月14日 14:07:09 作者：

管理員必須首先確認存在 .NET Framework 3.5 運行庫，然后才能將 Windows Presentation Foundation (WPF) 應(yīng)用程序部署在面向 .NET Framework 3.5 的系統(tǒng)上。

本主題提供一個以 HTML/JavaScript 編寫的腳本，管理員可以使用該腳本來確定系統(tǒng)上是否存在 .NET Framework 3.5。

復(fù)制代碼代碼如下:

<HTML> 
<HEAD> 
<TITLE>Test for the .NET Framework 3.5</TITLE> 
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8" /> 
<SCRIPT LANGUAGE="JavaScript"> 
<!-- 
var dotNETRuntimeVersion = "3.5.0.0"; 

function window::onload() 
{ 
if (HasRuntimeVersion(dotNETRuntimeVersion)) 
{ 
result.innerText = 
"This machine has the correct version of the .NET Framework 3.5." 
} 
else 
{ 
result.innerText = 
"This machine does not have the correct version of the .NET Framework 3.5." + 
" The required version is v" + dotNETRuntimeVersion + "."; 
} 
result.innerText += "\n\nThis machine's userAgent string is: " + 
navigator.userAgent + "."; 
} 

// 
// Retrieve the version from the user agent string and 
// compare with the specified version. 
// 
function HasRuntimeVersion(versionToCheck) 
{ 
var userAgentString = 
navigator.userAgent.match(/.NET CLR [0-9.]+/g); 
if (userAgentString != null) 
{ 
var i; 
for (i = 0; i < userAgentString.length; ++i) 
{ 
if (CompareVersions(GetVersion(versionToCheck), 
GetVersion(userAgentString[i])) <= 0) 
return true; 
} 
} 
return false; 
} 
// 
// Extract the numeric part of the version string. 
// 
function GetVersion(versionString) 
{ 
var numericString = 
versionString.match(/([0-9]+)\.([0-9]+)\.([0-9]+)/i); 
return numericString.slice(1); 
} 
// 
// Compare the 2 version strings by converting them to numeric format. 
// 
function CompareVersions(version1, version2) 
{ 
for (i = 0; i < version1.length; ++i) 
{ 
var number1 = new Number(version1[i]); 
var number2 = new Number(version2[i]); 
if (number1 < number2) 
return -1; 
if (number1 > number2) 
return 1; 
} 
return 0; 
} 

--> 
</SCRIPT> 
</HEAD> 

<BODY> 
<div id="result" /> 
</BODY> 
</HTML>

如果搜索“.NET CLR”版本成功，將顯示以下類型的狀態(tài)消息：
This machine has the correct version of the .NET Framework 3.5.
This machine's userAgent string is: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; InfoPath.2; .NET CLR 3.0.590; .NET CLR 3.5.20726; MS-RTC LM 8).
否則，顯示以下類型的狀態(tài)消息：
This machine does not have the correct version of the .NET Framework 3.5. The required version is v3.5.0.0.
This machine's userAgent string is: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; InfoPath.2; .NET CLR 3.0.590; MS-RTC LM 8).

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