读取cookie值，如果字符串的一部分=触发函数

read cookie value, trigger function if part of string =

本文关键字：一部分 函数 字符串 cookie 如果 读取      更新时间：2023-09-26

我有一个饼干-

LLBVAT

和cookie中的字符串是(可以改变，但结构保持不变):

所以我知道我需要读取cookie，然后在返回的字符串上运行一个函数。

A0A64A06500000B754E9DD10B1381:0:false:false:99:9999:99:false:0:-1:0:0:0:EMAILPCD:1319094000000:82

我需要在第二个false(第四个值)时触发一个函数。

任何帮助都会很感激。谢谢。

是否可以使用更少的代码:

function getCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

拆分: 

var trigger = "A0A64A06500000B754E9DD10B1381:0:false:false:99:9999:99:false:0:-1:0:0:0:EMAILPCD:1319094000000:82".split(':')[3] === "false";
if (trigger) func();

比较是非常重要的，因为if ("false")是真实的

从https://developer.mozilla.org/en/DOM/document.cookie获取cookie

docCookies = {
  getItem: function (sKey) {
    if (!sKey || !this.hasItem(sKey)) { return null; }
    return unescape(document.cookie.replace(new RegExp("(?:^|.*;''s*)" + escape(sKey).replace(/['-'.'+'*]/g, "''$&") + "''s*''=''s*((?:[^;](?!;))*[^;]?).*"), "$1"));
  },
  /**
  * docCookies.setItem(sKey, sValue, vEnd, sPath, sDomain, bSecure)
  *
  * @argument sKey (String): the name of the cookie;
  * @argument sValue (String): the value of the cookie;
  * @optional argument vEnd (Number, String, Date Object or null): the max-age in seconds (e.g., 31536e3 for a year) or the
  *  expires date in GMTString format or in Date Object format; if not specified it will expire at the end of session; 
  * @optional argument sPath (String or null): e.g., "/", "/mydir"; if not specified, defaults to the current path of the current document location;
  * @optional argument sDomain (String or null): e.g., "example.com", ".example.com" (includes all subdomains) or "subdomain.example.com"; if not
  * specified, defaults to the host portion of the current document location;
  * @optional argument bSecure (Boolean or null): cookie will be transmitted only over secure protocol as https;
  * @return undefined;
  **/
  setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) {
    if (!sKey || /^(?:expires|max'-age|path|domain|secure)$/.test(sKey)) { return; }
    var sExpires = "";
    if (vEnd) {
      switch (typeof vEnd) {
        case "number": sExpires = "; max-age=" + vEnd; break;
        case "string": sExpires = "; expires=" + vEnd; break;
        case "object": if (vEnd.hasOwnProperty("toGMTString")) { sExpires = "; expires=" + vEnd.toGMTString(); } break;
      }
    }
    document.cookie = escape(sKey) + "=" + escape(sValue) + sExpires + (sDomain ? "; domain=" + sDomain : "") + (sPath ? "; path=" + sPath : "") + (bSecure ? "; secure" : "");
  },
  removeItem: function (sKey) {
    if (!sKey || !this.hasItem(sKey)) { return; }
    var oExpDate = new Date();
    oExpDate.setDate(oExpDate.getDate() - 1);
    document.cookie = escape(sKey) + "=; expires=" + oExpDate.toGMTString() + "; path=/";
  },
  hasItem: function (sKey) { return (new RegExp("(?:^|;''s*)" + escape(sKey).replace(/['-'.'+'*]/g, "''$&") + "''s*''=")).test(document.cookie); }
};
// docCookies.setItem("test1", "Hello world!");
// docCookies.setItem("test2", "Hello world!", new Date(2020, 5, 12));
// docCookies.setItem("test3", "Hello world!", new Date(2027, 2, 3), "/blog");
// docCookies.setItem("test4", "Hello world!", "Sun, 06 Nov 2022 21:43:15 GMT");
// docCookies.setItem("test5", "Hello world!", "Tue, 06 Dec 2022 13:11:07 GMT", "/home");
// docCookies.setItem("test6", "Hello world!", 150);
// docCookies.setItem("test7", "Hello world!", 245, "/content");
// docCookies.setItem("test8", "Hello world!", null, null, "example.com");
// docCookies.setItem("test9", "Hello world!", null, null, null, true);
// alert(docCookies.getItem("test1"));

然后:

if (docCookies.getItem("LLBVAT").split(':')[3] === "false") triggerFunction();

你可以使用

function getTheResult(){
  //you can get this value as parameter in this function
  var val="A0A64A06500000B754E9DD10B1381:0:false:false:99:9999:99:false:0:-1:0:0:0:EMAILPCD:1319094000000:82";    
  //this final result will be as below by splitting the string
  var theresult =val.split(':')[3];    
  return theresult; //this will return 'false'
}

您可以使用jQuery插件或Plain Old Javascript进行cookie管理。从那里，如其他人所说，将结果传递给一个方法，该方法拆分字符串并根据条件调用另一个。

jQuery(document).ready(function(){
    var cookieValue = jQuery.cookie("LLBVAT");
    var result = process(cookieValue);
    if(result)
    { //do stuff }
});
function process(cookie){
   var result = cookie.split(':')[3];    
   return result === "false";
}

上面提到的Mozilla开发人员代码的小更新:文档。cookie只返回域和路径与当前URL匹配的cookie(由于安全限制)。要读取为其他路径创建的cookie，您可以使用以下解决方案:

  getItem: function (sKey, sPath, sDomain) {
if (!sKey) {
  return "";
 }
var allCookie;
if (!sDomain && !sPath) {
  allCookie = document.cookie;
} else {
  var iframe = document.createElement("IFRAME");
  iframe.setAttribute("src", (sDomain ? sDomain : "") + (sPath ? sPath : ""));
  document.documentElement.appendChild(iframe);
  allCookie = iframe.contentDocument.cookie;
  iframe.parentNode.removeChild(iframe);
  iframe = null;
}
var sValue = decodeURIComponent(allCookie.replace(new RegExp("(?:(?:^|.*;)''s*" + encodeURIComponent(sKey).replace(/['-'.'+'*]/g, "''$&") + "''s*''=''s*([^;]*).*$)|^.*$"), "$1")) || null;
return sValue;

}

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