https://www.w3cschool.cn/javascript/js-cookies.htmljavascript
咱們須要藉助cookie來實現這個功能html
function setcookie() { let d = new Date(); d.setTime(d.getTime() + 24 * 60 * 60 * 1000); // ad=popup-ad 鍵值對形式:name=key expires 有效期 document.cookie = 'ad=popup-ad;expires= ' + d.toGMTString(); let result = document.cookie; return result; } if (!document.cookie.includes('ad=')) { $('.ad').show(); setcookie(); } else { $('.ad').hide(); }