JS 的读写 Cookie

2004-03-05 06:50:04
作者：郑凯

var cookie_name = "COOKIE 变量名";
var cookie_content = "COOKIE 内容";

写比较简单，主要是 toGMTString，而且通过这个才知道 js 提供的时间戳的单位是微秒，faint

var tcookie_time = new Date();
var tcookie_expiry = new Date(tcookie_time.getTime() + 1000 * 3600 * 24 * 90);
document.cookie = cookie_name "=" + cookie_content + "; expires=" + tcookie_expiry.toGMTString();

读比较麻烦，因为得到的所有 COOKIE 是一个整个的字符串，要切出来

function getCookie(sCookieName) {
	var sSearch = sCookieName + "=";
	var sReturn = "";
	var sCookie = document.cookie;
	if (sCookie.length > 0) {
		iOffset = sCookie.indexOf(sSearch);
		if (iOffset != -1) {
			iOffset += sSearch.length
			iEnd = sCookie.indexOf(";", iOffset);
			if (iEnd == -1) {
				iEnd = sCookie.length;
			}
			sReturn = decodeURIComponent(sCookie.substring(iOffset, iEnd));
		}
	}
	return sReturn;
}