Javascript getCookie functions

user_238898 0
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I found two functions to get cookie data with Javascript, one on w3schools.com and one on quirksmode.org
I would like to know which one I should use?

For example I believe I read somewhere that there was a problem with some browsers splitting the ; semicolon?

w3schools:

function getCookie(c_name) {
    if (document.cookie.length > 0) {
        c_start = document.cookie.indexOf(c_name + "=");
        if (c_start != -1) {
            c_start = c_start + c_name.length + 1;
            c_end = document.cookie.indexOf(";", c_start);
            if (c_end == -1) c_end = document.cookie.length;
            return unescape(document.cookie.substring(c_start, c_end));
        }
    }
    return "";
}

quirksmode:

function readCokie(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;
}
cookies javascript
5 Answers

Here is my version, it covers the edge case of quoted values.

function getCookies() {
  const REGEXP = /([\w\.]+)\s*=\s*(?:"((?:\\"|[^"])*)"|(.*?))\s*(?:[;,]|$)/g;
  let cookies = {};
  let match;
  while( (match = REGEXP.exec(document.cookie)) !== null ) {
    let value = match[2] || match[3];
    cookies[match[1]] = decodeURIComponent(value);
  }
  return cookies;
}
user_2680
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