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Script

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Script

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A Script is a type of Lua code container that will run its contents on the server. By default, Scripts have print("Hello, world") as their contents. The instant that the following conditions are met, a Script’s Lua code is run in a new thread:

  • Disabled property is false
  • The Script object is a descendant of the Workspace or
    ServerScriptService

The Script will continue to run until the above conditions are not met, it terminates or it raises an error (unless that error is raised by a function connected to some event that is firing). Additionally, the thread will be stopped if the Script or one of its ancestors is destroyed. A script will continue to run even if the Instance/Parent|Parent property is set to nil (and the Script is not destroyed).

It has access to server-side objects, properties and events. For example, Scripts can award badges to players using BadgeService, while a LocalScript on the client cannot. Actions taken by LocalScripts that are not replicated (due to Workspace/FilteringEnabled) will not be visible to Scripts.

Properties

ProtectedString

Source

The code to be executed

Inherited from BaseScript: Show Hide

bool

Disabled

Determines whether a BaseScript will run or not.
Content

LinkedSource

The content ID of an uploaded script. When set binds the uploaded code to the script’s Script/Source.

Inherited from LuaSourceContainer: Show Hide

Instance

CurrentEditor

[NotScriptable]

The Player who is currently editing this script. This property is only used when in Team Create mode.

Inherited from Instance: Show Hide

bool

Archivable

Determines if an Instance can be cloned using /Instance/Clone or saved to file.
string

ClassName

[ReadOnly] [NotReplicated]

A read-only string representing the class this Instance belongs to
int

DataCost

[Hidden] [ReadOnly] [NotReplicated] [Deprecated]

The cost of saving the instance using data persistence.
string

Name

A non-unique identifier of the Instance
Instance

Parent

[NotReplicated]

Determines the hierarchical parent of the Instance
bool

RobloxLocked

[Hidden]

A deprecated property that used to protect CoreGui objects
int64

SourceAssetId

[Hidden] [NotReplicated]
bool

archivable

[Hidden] [NotReplicated] [Deprecated]
string

className

[ReadOnly] [NotReplicated] [Deprecated]

Functions

string

GetHash ( )

Returns a hash of the script’s source

Inherited from Instance: Show Hide

void

ClearAllChildren ( )

This function destroys all of an Instance’s children.
Instance

Clone ( )

Create a copy of an object and all its descendants, ignoring objects that are not Instance/Archivable|Archivable
void

Destroy ( )

Sets the Instance/Parent property to nil, locks the Instance/Parent property, disconnects all connections, and calls Destroy on all children.
Instance

FindFirstAncestor ( string name )

Returns the first ancestor of the Instance whose Instance/Name is equal to the given name.
Instance

FindFirstAncestorOfClass ( string className )

Returns the first ancestor of the Instance whose Instance/ClassName is equal to the given className.
Instance

FindFirstAncestorWhichIsA ( string className )

Returns the first ancestor of the Instance for whom Instance/IsA returns true for the given className.
Instance

FindFirstChild ( string name , bool recursive )

Returns the first child of the Instance found with the given name.
Instance

FindFirstChildOfClass ( string className )

Returns the first child of the Instance whose Instance/ClassName|ClassName is equal to the given className.
Instance

FindFirstChildWhichIsA ( string className , bool recursive )

Returns the first child of the Instance for whom Instance/IsA returns true for the given className.
Instance

FindFirstDescendant ( string name )

Returns the first descendant found with the given Instance/Name.
Actor

GetActor ( )

Returns the Actor associated with the Instance, usually the first Actor ancestor
Variant

GetAttribute ( string attribute )

Returns the attribute which has been assigned to the given name
RBXScriptSignal

GetAttributeChangedSignal ( string attribute )

Returns an event that fires when the given attribute changes
Dictionary

GetAttributes ( )

Returns a dictionary of string → variant pairs for each of the Instance|Instance’s attributes
Objects

GetChildren ( )

Returns an array containing all of the Instance’s children.
string

GetDebugId ( int scopeLength )

[NotBrowsable]

Returns a coded string of the Instances DebugId used internally by Roblox.
Array

GetDescendants ( )

[CustomLuaState]

Returns an array containing all of the descendants of the instance
string

GetFullName ( )

Returns a string describing the Instance’s ancestry.
RBXScriptSignal

GetPropertyChangedSignal ( string property )

Get an event that fires when a given property of an object changes.
bool

IsA ( string className )

[CustomLuaState]

Returns true if an Instance’s class matches or inherits from a given class
bool

IsAncestorOf ( Instance descendant )

Returns true if an Instance is an ancestor of the given descendant.
bool

IsDescendantOf ( Instance ancestor )

Returns true if an Instance is a descendant of the given ancestor.
void

Remove ( )

[Deprecated]

Sets the object’s Parent to nil, and does the same for all its descendants.
void

SetAttribute ( string attribute , Variant value )

Sets the attribute with the given name to the given value
Instance

WaitForChild ( string childName , double timeOut )

[CustomLuaState] [CanYield]

Returns the child of the Instance with the given name. If the child does not exist, it will yield the current thread until it does.
Objects

children ( )

[Deprecated]

Returns an array of the object’s children.
Instance

clone ( )

[Deprecated]
void

destroy ( )

[Deprecated]
Instance

findFirstChild ( string name , bool recursive )

[Deprecated]
Objects

getChildren ( )

[Deprecated]
bool

isA ( string className )

[Deprecated] [CustomLuaState]
bool

isDescendantOf ( Instance ancestor )

[Deprecated]
void

remove ( )

[Deprecated]

Events

Inherited from Instance: Show Hide

RBXScriptSignal

AncestryChanged ( Instance child , Instance parent )

Fires when the Instance/Parent property of the object or one of its ancestors is changed.
RBXScriptSignal

AttributeChanged ( string attribute )

Fires whenever an attribute is changed on the Instance
RBXScriptSignal

Changed ( string property )

Fired immediately after a property of an object changes.
RBXScriptSignal

ChildAdded ( Instance child )

Fires after an object is parented to this Instance.
RBXScriptSignal

ChildRemoved ( Instance child )

Fires after a child is removed from this Instance.
RBXScriptSignal

DescendantAdded ( Instance descendant )

Fires after a descendant is added to the Instance
RBXScriptSignal

DescendantRemoving ( Instance descendant )

Fires immediately before a descendant of the Instance is removed.
RBXScriptSignal

Destroying ( )

Fires immediately before the instance is destroyed via Instance/Destroy.
RBXScriptSignal

childAdded ( Instance child )

[Deprecated]

Code Samples

Hello World

A Lua example of the classic hello world program. When run, it displays the simple message to the Output in Roblox Studio. By default, Script and LocalScript objects contain this code when they are first created.

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RunService ServerScriptService