javascript設定cookie的函數

Code:

function GetCookieVal(offset) //獲得Cookie解碼後的值 { var endstr = document.cookie.indexOf (";", offset); if (endstr == -1) endstr = document.cookie.length; return unescape(document.cookie.substring(offset, endstr)); } function SetCookie(name, value) //設定Cookie值 { var expdate = new Date(); var argv = SetCookie.arguments; var argc = SetCookie.arguments.length; var expires = (argc > 2) ? argv[2] : null; var path = (argc > 3) ? argv[3] : null; var domain = (argc > 4) ? argv[4] : null; var secure = (argc > 5) ? argv[5] : false; if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 )); document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString())) +((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain)) +((secure == true) ? "; secure" : ""); } function DelCookie(name) //刪除Cookie { var exp = new Date(); exp.setTime (exp.getTime() - 1); var cval = GetCookie (name); document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString(); } function GetCookie(name) //獲得Cookie的原始值 { var arg = name + "="; var alen = arg.length; var clen = document.cookie.length; var i = 0; while (i < clen) { var j = i + alen; if (document.cookie.substring(i, j) == arg) return GetCookieVal (j); i = document.cookie.indexOf(" ", i) + 1; if (i == 0) break; } return null; }

自動化佈建網頁為首頁
Code:

onMouseOver="if(!this.isHomePage('http://www.mydomain.com/') && window.external && !GetCookie('HomePage')) { this.setHomePage('http://www.mydomain.com/') ; SetCookie('HomePage','true'); } return false;"