问如何在一段时间后删除parse.com中的对象

EN

Parse.Cloud.job('deleteOldPosts', function(request, status) {

    // All access
    Parse.Cloud.useMasterKey();

    var today = new Date();
    var days = 70;
    var time = (days * 24 * 3600 * 1000);
    var expirationDate = new Date(today.getTime() - (time));

    var query = new Parse.Query('post');
        // All posts have more than 70 days
        query.lessThan('createdAt', expirationDate);

        query.find().then(function (posts) {
            Parse.Object.destroyAll(posts, {
                success: function() {
                    status.success('All posts are removed.');
                },
                error: function(error) {
                    status.error('Error, posts are not removed.');
                }
            });
        }, function (error) {});

});

Parse.Cloud.job('deleteOldActivityLog', function(request, status) {
    var today = new Date();
    var days = 70;
    var time = (days * 24 * 3600 * 1000);
    var expirationDate = new Date(today.getTime() - (time));

    var query = new Parse.Query('ActivityLog');
        // All records created more than 70 days ago
    query.lessThan('createdAt', expirationDate);
    query.each(function(record) {
        return record.destroy({useMasterKey:true});
    },{useMasterKey:true}).then(function(result) {
        console.log("deleteOldActivityLog job completed.");
        status.success("deleteOldActivityLog job completed.");
    }, function(error) {
        alert("Error in deleteOldActivityLog: " + error.code + " " + error.message);
        status.error("Error in deleteOldActivityLog: " + error.code + " " + error.message);
    });
});