autoreload.js

/*
  http://la.ma.la/blog/diary_200601201204.htm

 */
if(location.search=="?autoreload") {
    var __autoreload_last_contents = new Array();
    setInterval(function(){
	var check = function(path) {
	    var onload = function() {
		(__autoreload_last_contents[path] && req.responseText != __autoreload_last_contents[path]) && location.reload(true);
		__autoreload_last_contents[path] = req.responseText;
	    }

	    var req;
	    if (window.XMLHttpRequest){
		req = new XMLHttpRequest();
		req.onload = onload;
	    }
	    else {
		req = new ActiveXObject("Microsoft.XMLHTTP");
		req.onreadystatechange = function() {
		    if (req.readyState == 4) onload();
		}
	    }
	    req.open("GET", path+"?"+(new Date()).getTime(), true);
	    req.send(null);
	}
	check(location.href);
	
	links = document.getElementsByTagName("link")
	for (i = 0; i < links.length; i++) {
	    if(links[i].rel=="stylesheet") {
		check(links[i].href);
	    }
	}
    },1*1000);
}