JavaScript operation Cookie (add, delete, change, check)

1 //1. Get the value of a cookie with the specified name objname2 functionGetCookie (objname) {3     varArrstr = Document.cookie.split (";");//between the various cookies;4      for(vari=0;i<arrstr.length;i++){5         vartemp = arrstr[i].split ("=");//the cookie name and cookie value are separated by =6         if(Temp[0] = =objname)7             returnUnescape (temp[1]);8     } 9  　　 return""; Ten } One  A //2. Add a cookie value to the browser's built-in Documnet.cookie object - functionAddcookie (objname,objvalue,objhours) { -     varstr = objname + "=" +Escape (objvalue); the     if(Objhours > 0) {//If the expiration time is not set (i.e. when objhours<=0), the cookie will be automatically deleted when the browser is closed -         varDate =NewDate (); -         varms = objhours*3600*1000;  -Date.settime (Date.gettime () +ms); +str + = "; Expires= "+date.togmtstring (); -    } +Document.cookie =str; A } at  -  //3. Set the value of the cookie named objname and set the expiration time to 30 days - functionSetcookie (Objname,objvalue) { -     vardays = 30;//indicatesThis cookie will be saved for 30 days -     varExp =NewDate (); -Exp.settime (Exp.gettime () + days*24*60*60*1000); inDocument.cookie = name + "=" + Escape (value) + "; expires=" +exp.togmtstring (); - } to  + //4. Delete the cookie named objname - functionDelcookie (objname) { the     varExp =NewDate (); *Exp.settime (Exp.gettime ()-1); $     varValue=GetCookie (objname);Panax Notoginseng     if(value!=NULL) { -document.cookie= name + "=" +value+ "; expires=" +exp.togmtstring (); the     } +}

JavaScript operation Cookie (add, delete, change, check)