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我可能在这里已经有了答案,但我不掌握这个主题,我需要在网站上使用这个 cookie 的帮助:

<script>
function setCookie(cname,cvalue,exdays) {
var d = new Date();
d.setTime(d.getTime() + (exdays*24*60*60*1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cname+"="+cvalue+"; "+expires;
}
function salvarCookie() {
var url = window.location.href;
var tamanho = url.length;   
var codigo = url.substring(tamanho-37, tamanho-10);
setCookie("Recuperar-Boleto", codigo, 30);
}
</script>

什么需要更改才能在 3 天内过期?你能帮助我吗?

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