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如何從JavaScript中的Cookie捕獲部分數據

[英]how to capture part of data from cookie in javascript

我在登錄網頁時有一個cookie。 這是Cookie的詳細信息

"{"XXVCode":"T937848","PName":"Garneriere","PAddress":"Dublin 8, southgate","Participation":false,"Coding":true}" 

我需要在變量中捕獲XXVCode,如何在此網頁上的javascript中執行此操作?

方法1:

您可以使用getCookie()函數:

// Code collected from w3schools.com

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

然后,您可以致電:

getCookie('XXVCode');

方法2:

注意:您的cookie字符串用double quote ,應該用single quote 因為double quote內的double quote將顯示syntax error

var cookie = '{"XXVCode":"T937848","PName":"Garneriere","PAddress":"Dublin 8, southgate","Participation":false,"Coding":true}';

var cookieArray = JSON.parse(cookie)

const XXVCode = cookieArray['XXVCode'];

轉換為對象,然后訪問密鑰

const cookie = "{"XXVCode":"T937848","PName":"Garneriere","PAddress":"Dublin 8, southgate","Participation":false,"Coding":true}"

const cookieJSON = JSON.parse(cookie)

const XXVCode = cookieJSON['XXVCode']

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