ブラウザのJavaScriptバージョンはテストをサポートします.

<script language="JavaScript"> 
//document.write("       ："+navigator.appName+"<br/>"); 
//document.write("     ："+navigator.appVersion+"<br/>"); 
//  JavaScript1.0             
document.write('      JavaScript1.0<br/>'); 
</script> 
<script language="JavaScript1.1"> 
//  JavaScript1.1             
document.write('      JavaScript1.1<br/>'); 
</script> 
<script language="JavaScript1.2"> 
//  JavaScript1.2             
document.write('      JavaScript1.2<br/>'); 
</script> 
<script language="JavaScript1.3"> 
//  JavaScript1.3             
document.write('      JavaScript1.3<br/>'); 
</script> 
<script language="JavaScript1.4"> 
//  JavaScript1.4             
document.write('      JavaScript1.4<br/>'); 
</script> 
<script language="JavaScript1.5"> 
//  JavaScript1.5             
document.write('      JavaScript1.5<br/>'); 
</script> 
<script language="JavaScript1.6"> 
//  JavaScript1.6             
document.write('      JavaScript1.6<br/>'); 
</script> 
<script language="JavaScript1.7"> 
//  JavaScript1.7             
document.write('      JavaScript1.7<br/>'); 
</script> 
<script language="JavaScript1.8"> 
//  JavaScript 1.8             
document.write('      JavaScript1.8<br/>'); 
</script> 
<script language="JavaScript1.9"> 
//  JavaScript1.9             
document.write('      JavaScript1.9<br/>'); 
</script>