JS Set cookie, delete cookie (citation)

JS Set cookie, delete cookie (citation)

There are many ways to set up a cookie in JS.

The first type: (This is the Code of the website)

<script>//Set cookiesfunction Setcookie (CNAME, cvalue, exdays) {var d =NewDate (); D.settime (D.gettime () + (exdays*24*60*60*1000));var expires ="expires="+D.toutcstring (); Document.cookie = CNAME +"="+ Cvalue +";" +Expires;}//Get cookiesfunction GetCookie (CNAME) {var name = cname +"=";var CA = Document.cookie.split (‘;‘);Forvar i=0; i<ca.length; i++) {var C =Ca[i];while (C.charat (0) = =‘') c = c.substring (1);if (C.indexof (name)! =-1)ReturnC.substring (Name.length, c.length); }Return"";}//Clearing cookiesfunction ClearCookie (name) {Setcookie (name,"", -1); } function Checkcookie () {var user = GetCookie ("Username");if (User! =""welcome Again  "+ user);} else" Span style= "color: #800000;" >please Enter your Name:); if (User! = null) {Setcookie ( Username365             

The second type:

<script>//JS Operation Cookies Method!//Write cookiesfunction Setcookie (c_name, value, Expiredays) {var exdate=NewDate (); Exdate.setdate (exdate.getdate () +Expiredays); document.cookie=c_name+"="+ Escape (value) + ((expiredays==NULL)?"" :"; expires="+Exdate.togmtstring ()); }//Read cookiesfunction GetCookie (name) {var arr,reg=New RegExp ("(^| )"+name+"=([^;] *)(;|$)");if (arr=Document.cookie.match (REG))Return (arr[2]);ElseReturnNull;}//Delete Cookiesfunction Delcookie (name) {var exp =NewDate (); Exp.settime (Exp.gettime ()-1);var cval=GetCookie (name);if (cval!=Null) document.cookie= name + =" ;expires= "+exp.togmtstring ();} // Use example Setcookie (username ",  darren< Span style= "color: #800000;" > ', 30 "alert (GetCookie (  "username"              

A third example

"Content-type"Content="text/html; Charset=utf-8"/> "Javascript"Type="Text/javascript">function Addcookie (objname, ObjValue, objhours) {//Add a cookievar str = objname +"=" +Escape (ObjValue);if (Objhours >0) {//When 0 does not set the expiration time, the cookie disappears automatically when the browser shuts downvar date =NewDate ();var ms = Objhours *3600 *1000; Date.settime (Date.gettime () +MS); str + ="; expires=" +Date.togmtstring (); } Document.cookie =Str Alert"Add Cookie Success"); } function GetCookie (objname) {//Gets the value of the cookie for the specified namevar arrstr = Document.cookie.split (";");for (var i =0; i < arrstr.length; i++) {var temp = Arrstr[i].split ("=");if (temp[0] = =objname)Return Unescape (temp[1]); }} function Delcookie (name) {//To delete a cookie of the specified name, you can set its expiration time to a past timevar date =NewDate (); Date.settime (Date.gettime ()-10000); Document.cookie = name +"=a; expires=" +Date.togmtstring (); } function Allcookie () {//Read all saved cookie stringsvar str =Document.cookie;if (str = ="") {str ="No cookies are saved"; } alert (str); } function $ (m, N) {ReturnDocument.forms[m].elements[n].value; } function add_ () {var cookie_name = $ ("MyForm","Cookie_name");var Cookie_value = $ ("MyForm","Cookie_value");var cookie_expirehours = $ ("MyForm","Cookie_expireshours"); Addcookie (Cookie_name, Cookie_value, cookie_expirehours); } function get_ () {var cookie_name = $ ("MyForm","Cookie_name");var cookie_value =GetCookie (Cookie_name); alert (Cookie_value); } function Del_ () {var cookie_name = $ ("MyForm","Cookie_name"); Delcookie (Cookie_name); Alert"Delete Succeeded"); } </script> "MyForm"> <div> <labelFor="Cookie_name">Name </label> <input type="Text"Name="Cookie_name"/> </div> <div> <labelFor="Cookie_value">Values </lable> <input type="Text"Name="Cookie_value"/> </div> <div> <labelFor="Cookie_expirehours">How many hours of expiration </lable> <input type="Text"Name="Cookie_expireshours"/> </div> <div> <input type="button"Value="Add this cookie"Onclick="Add_ ()"/><input type= "button" Value= " read all Cookie" onclick=  "allcookie () "/> <input type= "button  "Value="  read the name cookie< Span style= "color: #800000;" > "Onclick=" get_ ()  "button" value= "Delete this name cookie" Onclick= "Del_ ()"/> </div> </form> </body>      

JS Set cookie, delete cookie (citation)