这个是个很常见的小知识,写个博客来记录一下,方便以后可以查看和吃老本。
核心代码
var CookieHandle = {
getCookie: function (cookieName) {
if (document.cookie.length > 0) {
var c_start = document.cookie.indexOf(cookieName + "=");
if (c_start !== -1) {
c_start = c_start + cookieName.length + 1;
var c_end = document.cookie.indexOf(";", c_start);
if (c_end === -1) c_end = document.cookie.length;
return decodeURIComponent(document.cookie.substring(c_start, c_end));
}
}
return "";
},
setCookie: function (cookieName, value, expiredays) {
var exdate = new Date();
exdate.setDate(exdate.getDate() + expiredays);
var expire_cookie = cookieName + "=" + decodeURI(value) + ";expires=" + exdate.toUTCString();
document.cookie = expire_cookie;
}
};
一般用于登录页面,当用户账号密码输入正确的时候,保存信息到cookie中
CookieHandle.setCookie('username',accountNum,90);
CookieHandle.setCookie('password',passwordNum,90);
当访问登录页 的时候,读取cookie保存的值并写到输入框中
var got_cookie_account = CookieHandle.getCookie('username');
var got_cookie_password = CookieHandle.getCookie('password');
$('#account').val(got_cookie_account);
$('#password').val(got_cookie_password);