获取cookie中的某个参数值
因为cookie的值是很多key=value连接起来的字符串,所以如果要取cookie中某个key的值:
function getCookie(name) { let cookieValue = null; if (document.cookie && document.cookie !== '') { let cookies = document.cookie.split(';'); for (let i = 0; i < cookies.length; i++) { let cookie = cookies[i].trim(); // 判断这个cookie的参数名是不是我们想要的 if (cookie.substring(0, name.length + 1) === (name + '=')) { cookieValue = decodeURIComponent(cookie.substring(name.length + 1)); break; } } } return cookieValue; }