Automatic Page Refresher with or without Countdown Display

This JavaScript automatically refreshes (reloads) your webpage every few seconds and displays the countdown-time inside the status bar. Easy configuration of the refresh interval. The coundown-display can be turned on or turned off. Copy-and-paste installation.

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Install it

Step 1: Open your webpage. Paste the following code between the <head> and </head>tags:

////////////////////////////////////////////////////////////////////////////
// CONFIGURATION STARTS HERE

// Configure refresh interval (in seconds)
var refreshinterval=5

// Shall the coundown be displayed inside your status bar? Say "yes" or "no" below:
var displaycountdown="yes"

// CONFIGURATION ENDS HERE
////////////////////////////////////////////////////////////////////////////

// Do not edit the code below
var starttime
var nowtime
var reloadseconds=0
var secondssinceloaded=0

function starttime() {
	starttime=new Date()
	starttime=starttime.getTime()
    countdown()
}

function countdown() {
	nowtime= new Date()
	nowtime=nowtime.getTime()
	secondssinceloaded=(nowtime-starttime)/1000
	reloadseconds=Math.round(refreshinterval-secondssinceloaded)
	if (refreshinterval>=secondssinceloaded) {
        var timer=setTimeout("countdown()",1000)
		if (displaycountdown=="yes") {
			window.status="Page refreshing in "+reloadseconds+ " seconds"
		}
    }
    else {
        clearTimeout(timer)
		window.location.reload(true)
    } 
}
window.onload=starttime
</script>

Step 2: Open your webpage. Go to the top of the script and configure the refresh interval and the display status