JavaScript manipulation Cookie Method Instance analysis

This example describes the JavaScript manipulation cookie method. Share to everyone for your reference. Specifically as follows:

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My methods for setting, reading and deleting cookies. I have methods to check for the existence of cookies names or values,//To retrieve by name or value, and to create a F ormatted string of//All cookies. My site:andrew.dx.am var setcookie = function (name, value, expires, path, domain, secure) {//the caller should Trim The name/value pair, if required. Sets the Name/value pair (encoded); ' Expires ' is the No. Days. var expires_date; if (expires) {expires_date = new date (); Expires_date.setdate (Expires_date.getdate () + expires);} Document.cookie = Enco Deuricomponent (name) + "=" + encodeuricomponent (value) + ((expires)? "; expires=" + expires_date.toutcstring (): "") + ((path)?; Path= "+ Path:" "+ (domain)?"; domain= "+ domain:" ") + ((secure)?"; Secure ":" "); var Deletecookie = function (name, path, domain) {//The caller should Trim the name/value pair.//encodes the name Befo Re deleting. Document.cookie = encodeURIComponent (NAMe) + "=" + (path)? ";p ath=" + Path: "") + ((domain)?; domain= "+ Domain:" "") + "Expires=fri, 01-jan-2010 00:00:01 UTC"; var delallcookies = function () {var currdate = new Date (), I, Thecookie = Document.cookie.split (";"); currdate = Currdat E.toutcstring (); i = thecookie.length; while (i--) {document.cookie = Thecookie[i] + "; expires = "+ currdate; } }; var escapereg = function (str) {//Helper fn:escapes characters for use in a regular expression. Return Str.replace (/[-[ ]{} () *+?., ^$| #s]/g, "$&"); }; The following four functions does not Trim the name or value//-The calling FNS should does this. var cnameexists = function (cookie_name) {//case-insensitive var testname, Myreg; if (document.cookie.length = 0) retur n false; TestName = Escapereg (cookie_name); Myreg = new RegExp (' (^|;)? ' + testname + ' = ([^;] *) (; |$) ', ' I '); Return Myreg.test (decodeURIComponent (Document.cookie)); }; var cvalueexists = function (cookie_value) {//case insensitive Var testname, Myreg; if (Document.cookie.length = = 0) return false; TestName = Escapereg (Cookie_value); Myreg = new RegExp (' (=) ' + testname + ' (; |$) ', ' I '); Return Myreg.test (decodeURIComponent (Document.cookie)); }; var cnameget = function (cookie_value) {//case-insensitive Var testname, myreg, results; if (document.cookie.length = 0 ) return "; TestName = Escapereg (Cookie_value); Myreg = new RegExp (' (^|;)? [^=]*) = ' + TestName + ' (; |$) ', ' I '); Results = decodeURIComponent (document.cookie). Match (Myreg); return (results)? RESULTS[2]: '; }; var cvalueget = function (cookie_name) {//case-insensitive Var testname, myreg, results; if (document.cookie.length = 0 ) return "; TestName = Escapereg (cookie_name); Myreg = new RegExp (' (^|;)? ' + testname + ' = ([^;] *) (; |$) ', ' I '); Results = decodeURIComponent (document.cookie). Match (Myreg); return (results)? RESULTS[2]: '; }; var cookiestr = function () {//Returns a string (with line breaks) which could to//placed in, for example, a textarea. RetUrn decodeURIComponent (document.cookie). Replace (/([^=;] +)=([^;] *) [S]*/g, ' $ ($) n '] | | ''; };

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