localStorage中js数组的存储和读取

 　　var old_destid = localStorage.getItem('destid');
        if (!old_destid) {
            var destids = [];
            destids.push(destid)
        } else {
            var destids = old_destid.split(',');
            if ($.inArray('<?= $destid ?>', destids) == '-1') {
                destids.push(destid)
            }
        }
        localStorage.setItem('destid', destids.join(','));//保存数据

  var old_destid = localStorage.getItem('destid');
                if (old_destid) {
                    var destids = old_destid.split(',');
                    var dest_stu = $.inArray('' + dest.destid + '', destids) >= 0 ? 'yicanguan' : 'weicanguan';
                }