如何从cookie创建和读取值?如何在JavaScript中创建和读取cookie中的值?
4 回答
斯蒂芬大帝
TA贡献1827条经验 获得超8个赞
以下是可用于创建和检索Cookie的函数。
var createCookie = function(name, value, days) { var expires; if (days) { var date = new Date(); date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000)); expires = "; expires=" + date.toGMTString(); } else { expires = ""; } document.cookie = name + "=" + value + expires + "; path=/";}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 "";}
POPMUISE
TA贡献1765条经验 获得超5个赞
简约和全功能的ES6方法:
const setCookie = (name, value, days = 7, path = '/') => { const expires = new Date(Date.now() + days * 864e5).toUTCString() document.cookie = name + '=' + encodeURIComponent(value) + '; expires=' + expires + '; path=' + path}const getCookie = (name) => { return document.cookie.split('; ').reduce((r, v) => { const parts = v.split('=') return parts[0] === name ? decodeURIComponent(parts[1]) : r }, '')}const deleteCookie = (name, path) => { setCookie(name, '', -1, path)}
鸿蒙传说
TA贡献1865条经验 获得超7个赞
Mozilla提供了一个简单的框架,用于读取和编写具有完全unicode支持的cookie以及如何使用它的示例。
一旦包含在页面上,您就可以设置一个cookie:
docCookies.setItem(name, value);
读一个cookie:
docCookies.getItem(name);
或删除cookie:
docCookies.removeItem(name);
例如:
// sets a cookie called 'myCookie' with value 'Chocolate Chip'docCookies.setItem('myCookie', 'Chocolate Chip'); // reads the value of a cookie called 'myCookie' and assigns to variablevar myCookie = docCookies.getItem('myCookie'); // removes the cookie called 'myCookie'docCookies.removeItem('myCookie');
有关Mozilla的document.cookie页面的更多示例和详细信息,请参阅。
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