解决方法
javascript仅支持cookie.您可以将它们设置为跟踪用户会话,但不支持使用会话.
function createCookie(name,value,days) { var expires = ""; if (days) { var date = new Date(); date.setTime(date.getTime()+(days*24*60*60*1000)); expires = "; expires="+date.toGMTString(); } document.cookie = name+"="+value+expires+"; path=/"; } function readCookie(name) { var nameEQ = name + "="; var ca = document.cookie.split(';'); for(var i=0;i < ca.length;i++) { var c = ca[i]; while (c.charAt(0)==' ') { c = c.substring(1,c.length); } if (c.indexOf(nameEQ) == 0) { return c.substring(nameEQ.length,c.length); } } return null; } function eraseCookie(name) { createCookie(name,"",-1); }