console.log("script log"); 
setInterval(function(){ console.log(new Date().toLocaleTimeString()); 
document.getElementById('clock').innerHTML=new Date().toLocaleTimeString(); },10000); 

document.writeln("<h2>Navigator.userAgent:</h2> " + navigator.userAgent + "<br />"); document.writeln("<h2>Navigator.appName: </h2>" + navigator.appName + "<br />"); document.writeln("<h2>Navigator.appCodeName: </h2>" + navigator.appCodeName + "<br />"); document.writeln("<h2>Navigator.appVersion: </h2>" + navigator.appVersion + "<br />"); function onBtn() {alert('JS alert test'); console.log("JS alert test");}