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引用 import storage from '@system.storage'
事例代码：ctime缓存过期时间（分，天），DatList用户缓存数据
//返回格式化日期 yyyy/MM/dd HH:mm:ss
utcToDate(date) {
date = typeof (date) == "undefined" ? new Date() : date;
var ndt;
ndt = date.getFullYear() + "/" + (date.getMonth() + 1) + "/" + date.getDate() + " " + date.getHours() + ":" + date.getMinutes() + ":" + date.getSeconds();
return ndt;
}
//格式化计算比较时间差 返回相差的秒数
Days(day1, day2, isday) {
day2 = typeof (day2) == "undefined" ? this.utcToDate() : day2;
day1 = day1.replace(" ", " ");
day2 = day2.replace(" ", " ");
var reg1 = /年|月|日 |\/|:| /;
var reg2 = /年|月|日 |\/|:| /;
if (day1.indexOf('-') != -1)
reg1 = /-|-| |\/|:| /;
else if (day1.indexOf('/') != -1)
reg1 = /\/|\/| |\/|:| /;
if (day2.indexOf('-') != -1)
reg2 = /-|-| |\/|:| /;
else if (day2.indexOf('/') != -1)
reg2 = /\/|\/| |\/|:| /;
//用正则分割
var DI1 = day1.split(reg1);
var DI2 = day2.split(reg2);
var date1 = new Date(DI1[0], DI1[1] * 1 - 1, DI1[2], this.sethour(DI1[3]), DI1[4], DI1[5]);
var date2 = new Date(DI2[0], DI2[1] * 1 - 1, DI2[2], this.sethour(DI2[3]), DI2[4], DI2[5]);
//用距标准时间差来获取相距时间
var minsec = Date.parse(date1) - Date.parse(date2);
var days = minsec / 1000; //相差的秒数
return days;
}
//增加当前时间XX分钟
addTime(minute) {
var date = new Date(new Date().getTime() + 60000 * minute);
return date.getFullYear() + "/" + (date.getMonth() + 1) + "/" + date.getDate() + " " + date.getHours() + ":" + date.getMinutes() + ":" + date.getSeconds();
}
//增加当前时间XX天
addTimes(day) {
var date = new Date(new Date().getTime() + 86400000 * day);
return date.getFullYear() + "/" + (date.getMonth() + 1) + "/" + date.getDate() + " 00:00:00";
}
var DatList_ = {
"ctime": addTimes(30),
"List": DatList
};
缓存存储：
storage.set({ key: "缓存KEY", value: DatList_ })
缓存读取： LoadData fetch 读取数据
storage.get({
key: "缓存KEY",
success: function (data) {
if (data != '' && typeof data == "string") {
var DatList = JSON.parse(data);
if (typeof (DatList.ctime) != "undefined") {
if (Days(DatList.ctime, utcToDate(), true) < 0) {
mthis.LoadData(key);
}
else {
mthis.InData = DatList.List;
}
} else
mthis.LoadData(key);
} else {
mthis.LoadData(key);
}
},
fail: function (data, code) {}
})
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