js 操作 cookies 学习
文章摘自 http://www.quirksmode.org/js/cookies.html
1 function createCookie(name, value, days) { 2 if (days) { 3 var date = new Date(); 4 date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000)); 5 var expires = "; expires=" + date.toGMTString(); 6 } 7 else var expires = ""; 8 document.cookie = name + "=" + value + expires + "; path=/"; 9 }10 function readCookie(name) {11 var nameEQ = name + "=";12 var ca = document.cookie.split(';');13 for (var i = 0; i < ca.length; i++) {14 var c = ca[i];15 while (c.charAt(0) == ' ') c = c.substring(1, c.length);16 if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);17 }18 return null;19 }20 function eraseCookie(name) {21 createCookie(name, "", -1);22 }TAG:
