<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> </head> <body> <script> //寫cookies function setCookie(k,v){ var Days = 30; var exp = new Date(); exp.setTime(exp.getTime() + Days*24*60*60*1000); document.cookie = k + "="+ escape (v) + ";expires=" + exp.toGMTString(); } //讀cookies function getCookie(k){ var temp=null; var arr,reg=new RegExp("(^| )"+k+"=([^;]*)(;|$)"); if(arr=document.cookie.match(reg)){ temp= unescape(arr[2]); } return temp; } //刪cookies function removeCookie(k){ var exp = new Date(); exp.setTime(exp.getTime() - 1); var cval=getCookie(k); if(cval!=null){ document.cookie= k + "="+cval+";expires="+exp.toGMTString(); } } setCookie('uname','丁少'); console.log(getCookie('uname')) removeCookie('uname') console.log(getCookie('uname')) </script> </body> </html>