如何在JavaScript中获取和设置Cookie [英] How to get and set cookies in JavaScript

问题描述

通过JavaScript获取和设置Cookie有点像这样：

Getting and setting Cookies via JavaScript feels a little odd like this:

设置： document.cookie =< key> =< ; value> [; expires =< utc_expires> [; path =< path>]];

获取：解析document.cookie

我在 W3C.org Cookies

有没有更优雅/更简便的方法？

Is there a more elegant/easy way to do this?

推荐答案

您可以使用一些简单的函数，例如 setCookie（）和 getCookie （）。

You can use some simple functions like setCookie() and getCookie().

您可以使用以下调用设置Cookie：

You can set a cookie using the call:

setCookie('myName','value', 3);

function setCookie(name, value, days) {
  var expires = "";
  if (days) {
    var date = new Date();
    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
    expires = "; expires=" + date.toUTCString();
  }
  document.cookie = name + "=" + (value || "") + expires + "; path=/";
}

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;
}

注意 ：来源来自 quirksmode 。如果您想查看 docs 了解有关Cookie的更多信息。

Note: Source is from quirksmode. Please have a look at the docs if you want to know more about cookies.

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