//取值
function get(key, sync=true) {
	try {
		if (sync) {
			return uni.getStorageSync(key);
		} else {
			let data = '';
			uni.getStorage({
				key: key,
				success: function(res) {
					data = res.data;
				}
			});
			return data;
		}
	} catch (e) {
		return false;
	}
}

//存值
function set(key, value, sync=true) {
	try {
		if (sync) {
			return uni.setStorageSync(key, value);
		} else {
			uni.setStorage({
				key: key,
				data: value
			});
		}
	} catch (e) {

	}
}

//删值
function del(key, sync=true) {
	try {
		if (sync) {
			return uni.removeStorageSync(key);
		} else {
			uni.removeStorage({
				key: key
			});
		}
	} catch (e) {
		return false;
	}
}

//清除本地缓存
function clear(sync=true) {
	try {
		if (sync) {
			return uni.clearStorageSync();
		} else {
			uni.clearStorage();
		}
	} catch (e) {
		return false;
	}
}

export {
	get,
	set,
	del,
	clear
}