script06.js

来自「图灵程序设计丛书 JavaScript基础教程源代码」· JavaScript 代码 · 共 36 行

window.onload = initPage;

function initPage() {
	var now = new Date();
	var expireDate = new Date();
	expireDate.setMonth(expireDate.getMonth()+6);
   
	var hitCt = parseInt(cookieVal("pageHit"));
	hitCt++;
	
	var lastVisit = cookieVal("pageVisit");
	if (lastVisit == 0) {
		lastVisit = "";
	}
	
	document.cookie = "pageHit=" + hitCt + ";expires=" + expireDate.toGMTString();
	document.cookie = "pageVisit=" + now + ";expires=" + expireDate.toGMTString();
	
	var outMsg = "You have visited this page " + hitCt + " times.";
	if (lastVisit != "") {
		outMsg += "<br />Your last visit was " + lastVisit;
	}
	document.getElementById("cookieData").innerHTML = outMsg;
}

function cookieVal(cookieName) {
	var thisCookie = document.cookie.split("; ");
	
	for (var i=0; i<thisCookie.length; i++) {
		if (cookieName == thisCookie[i].split("=")[0]) {
			return thisCookie[i].split("=")[1];
		}
	}
	return 0;
}