How to check whether Java plugins are installed or not in a browser using Code .?
Question
如何使用java或javascript或JSP代码在浏览器中检查是否安装了Java插件。
5 answers
solution1
7 ACCPTED 2011-04-12 07:45:47
Java/Sun/Oracle provides a deployment toolkit script in the form of a JavaScript file that lets you achieve what you need.
You could invoke the getJREs() function which returns an array of currently-installed JRE version strings.
You can even install a particular JRE version if you need to, via the installJRE(requestVersion) function.
solution2
3 2011-04-12 08:04:06
Use deployJava.js to check the java installation.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<SCRIPT LANGUAGE="JavaScript" src="deployJava.js">
</SCRIPT>
<script type="text/javascript">
function call()
{
if (deployJava.versionCheck("1.6.0+") || deployJava.versionCheck("1.4") || deployJava.versionCheck("1.5.0*"))
{
alert("Java is Enabled");
} else
{
alert("Java is Not Enabled");
}
}
</script>
<BODY onload="call();">
</BODY>
</HTML>
solution3
1 2012-12-31 12:12:01
I tried jqplugin and deployJava first, but those did fail for IE8 at least. So i came over this lib, that has the most comprehensive documentation and implementation that i could find and worked for all the browser that i could test
solution4
1 2014-01-11 03:21:30
From Navigator javaEnabled() : var x = "Java Enabled: " + navigator.javaEnabled();
The result of x will be: Java Enabled: false
solution5
1 2011-04-12 07:03:55
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