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HttpCapabilitiesBase.EcmaScriptVersion Property

Gets the version number of ECMAScript that the browser supports.

Namespace: System.Web.Configuration
Assembly: System.Web (in system.web.dll)

public Version EcmaScriptVersion { get; }
/** @property */
public Version get_EcmaScriptVersion ()

public function get EcmaScriptVersion () : Version

Not applicable.

Property Value

The version number of ECMAScript that the browser supports.

The following code example shows how to determine whether the browser supports an ECMAScript major version number greater than 1.

<%@ page language="C#"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<script runat="server">
    void Page_Load(Object Sender, EventArgs e)

    void CheckBrowserCaps()
        String labelText = "";
        System.Web.HttpBrowserCapabilities myBrowserCaps = Request.Browser;
        if (((System.Web.Configuration.HttpCapabilitiesBase)myBrowserCaps).EcmaScriptVersion.Major > 1)
            labelText = "EcmaScript version is greater than 1.";
            labelText = "EcmaScript version is less than or equal to 1.";

        Label1.Text = labelText;

<html xmlns="" >
    <title>Browser Capabilities Sample</title>
    <form runat="server" id="form1">
            Browser Capabilities:
            <p/><asp:Label ID="Label1" Runat="server" />

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0