JavaScript operations Cookie method example analysis _ javascript skills

This article mainly introduces the JavaScript Cookie operation method. The example analyzes the related skills of javascript for cookie operations. For more information, see the example below. Share it with you for your reference. The details are as follows:

// My methods for setting, reading and deleting cookies.// I have methods to check for the existence of cookie names or values, // to retrieve by name or value, and to create a formatted string of // all the cookies.// My site: andrew.dx.amvar 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. of days.  var expires_date;  if (expires) {    expires_date = new Date();    expires_date.setDate(expires_date.getDate() + expires);  }  document.cookie = encodeURIComponent(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 before deleting.  document.cookie = encodeURIComponent(name) + "=" +     ( ( path ) ? ";path=" + 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 = currDate.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 do not Trim the name or value // - the calling fns should do this.var CNameExists = function (cookie_name) { // case-insensitive  var testName, myReg;  if (document.cookie.length == 0) return 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 be   // placed in, for example, a textarea.  return decodeURIComponent(document.cookie).    replace(/([^=;]+)=([^;]*)[;\s]*/g,'$1 ($2)\n') || '';};

I hope this article will help you design javascript programs.