---
name: Script
last_updated: 2026-06-11T23:11:57Z
inherits:
  - BaseScript
  - LuaSourceContainer
  - Instance
  - Object
type: class
memory_category: Script
summary: "An object that contains and runs Luau code on the server."
---

# Class: Script

> An object that contains and runs Luau code on the server.

## Description

A [Script](/docs/reference/engine/classes/Script.md) is a Luau source container that can access server-side
objects, properties, and events, such as to award badges to players using
[BadgeService](/docs/reference/engine/classes/BadgeService.md), while [LocalScripts](/docs/reference/engine/classes/LocalScript.md) on the client
cannot.

The instant that the following conditions are met, a script's code is run in a
new thread:

- Its [Enabled](/docs/reference/engine/classes/Script.md) property is `true`.
- The [Script](/docs/reference/engine/classes/Script.md) object is a descendant of the [Workspace](/docs/reference/engine/classes/Workspace.md) or
  [ServerScriptService](/docs/reference/engine/classes/ServerScriptService.md).

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 [Parent](/docs/reference/engine/classes/Instance.md) property is set to
`nil` and the [Script](/docs/reference/engine/classes/Script.md) is not destroyed.

## Properties

### Property: Script.Source

```json
{
  "type": "ProtectedString",
  "access": "ReadWrite",
  "security": {
    "read": "None",
    "write": "None"
  },
  "serialization": {
    "can_load": true,
    "can_save": true
  },
  "thread_safety": "ReadSafe",
  "category": "Data",
  "capabilities": [
    "PluginOrOpenCloud"
  ]
}
```

Represents the code to be executed. It's protected and discouraged for
editing directly. Attempting to access this property in a [Script](/docs/reference/engine/classes/Script.md)
or [LocalScript](/docs/reference/engine/classes/LocalScript.md) causes errors.

If you want to read or modify the source of a script that a user has open,
use [ScriptEditorService](/docs/reference/engine/classes/ScriptEditorService.md) to interact with the
[Script Editor](/docs/en-us/studio/script-editor.md) rather than directly
modifying this property. Both
[ScriptEditorService:UpdateSourceAsync()](/docs/reference/engine/classes/ScriptEditorService.md) and
[ScriptEditorService:GetEditorSource()](/docs/reference/engine/classes/ScriptEditorService.md) can read or modify script
content from the script editor if the script is opened. You can also read
the source from the
[command line](/docs/en-us/studio/ui-overview.md#command-bar).

## Inherited Members

### From [BaseScript](/docs/reference/engine/classes/BaseScript.md)

- **Property `Disabled`** (`boolean`): Determines whether a BaseScript will run or not.
- **Property `Enabled`** (`boolean`): Determines whether a BaseScript will run or not.
- **Property `LinkedSource`** (`ContentId`): The content ID of an uploaded script. When set binds the uploaded code to *(deprecated)*
- **Property `RunContext`** (`RunContext`): Determines the context under which the script will run.

### From [Instance](/docs/reference/engine/classes/Instance.md)

- **Property `Archivable`** (`boolean`): Determines if an Instance and its descendants can be cloned using
- **Property `archivable`** (`boolean`):  *(deprecated, hidden)*
- **Property `Capabilities`** (`SecurityCapabilities`): The set of capabilities allowed to be used for scripts inside this
- **Property `Name`** (`string`): A non-unique identifier of the Instance.
- **Property `Parent`** (`Instance`): Determines the hierarchical parent of the Instance.
- **Property `PredictionMode`** (`PredictionMode`): 
- **Property `RobloxLocked`** (`boolean`): A deprecated property that used to protect CoreGui objects. *(hidden)*
- **Property `Sandboxed`** (`boolean`): When enabled, the instance can only access abilities in its `Capabilities`
- **Property `UniqueId`** (`UniqueId`): A unique identifier for the instance.
- **Method `AddTag(tag: string): ()`**: Applies a tag to the instance.
- **Method `children(): Instances`**: Returns an array of the object's children. *(deprecated)*
- **Method `ClearAllChildren(): ()`**: This method destroys all of an instance's children.
- **Method `Clone(): Instance`**: Create a copy of an instance and all its descendants, ignoring instances
- **Method `clone(): Instance`**:  *(deprecated)*
- **Method `Destroy(): ()`**: Sets the Instance.Parent property to `nil`, locks the
- **Method `destroy(): ()`**:  *(deprecated)*
- **Method `FindFirstAncestor(name: string): Instance?`**: Returns the first ancestor of the Instance whose
- **Method `FindFirstAncestorOfClass(className: string): Instance?`**: Returns the first ancestor of the Instance whose
- **Method `FindFirstAncestorWhichIsA(className: string): Instance?`**: Returns the first ancestor of the Instance for whom
- **Method `FindFirstChild(name: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance found with the given name.
- **Method `findFirstChild(name: string, recursive?: boolean): Instance`**:  *(deprecated)*
- **Method `FindFirstChildOfClass(className: string): Instance?`**: Returns the first child of the Instance whose
- **Method `FindFirstChildWhichIsA(className: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance for whom
- **Method `FindFirstDescendant(name: string): Instance?`**: Returns the first descendant found with the given Instance.Name.
- **Method `GetActor(): Actor?`**: Returns the Actor associated with the Instance, if any.
- **Method `GetAttribute(attribute: string): Variant`**: Returns the value which has been assigned to the given attribute name.
- **Method `GetAttributeChangedSignal(attribute: string): RBXScriptSignal`**: Returns an event that fires when the given attribute changes.
- **Method `GetAttributes(): Dictionary`**: Returns a dictionary of the instance's attributes.
- **Method `GetChildren(): Instances`**: Returns an array containing all of the instance's children.
- **Method `getChildren(): Instances`**:  *(deprecated)*
- **Method `GetDebugId(scopeLength?: int): string`**: Returns a coded string of the debug ID used internally by Roblox.
- **Method `GetDescendants(): Instances`**: Returns an array containing all of the descendants of the instance.
- **Method `GetFullName(): string`**: Returns a string describing the instance's ancestry.
- **Method `GetStyled(name: string, selector: string?): Variant`**: Returns the styled or explicitly modified value of the specified property,
- **Method `GetStyledPropertyChangedSignal(property: string): RBXScriptSignal`**: 
- **Method `GetTags(): Array`**: Gets an array of all tags applied to the instance.
- **Method `HasTag(tag: string): boolean`**: Check whether the instance has a given tag.
- **Method `IsAncestorOf(descendant: Instance): boolean`**: Returns true if an Instance is an ancestor of the given
- **Method `IsDescendantOf(ancestor: Instance): boolean`**: Returns `true` if an Instance is a descendant of the given
- **Method `isDescendantOf(ancestor: Instance): boolean`**:  *(deprecated)*
- **Method `IsPropertyModified(property: string): boolean`**: Returns `true` if the value stored in the specified property is not equal
- **Method `QueryDescendants(selector: string): Instances`**: Returns an array containing all descendants of the instance that match the
- **Method `Remove(): ()`**: Sets the object's `Parent` to `nil`, and does the same for all its *(deprecated)*
- **Method `remove(): ()`**:  *(deprecated)*
- **Method `RemoveTag(tag: string): ()`**: Removes a tag from the instance.
- **Method `ResetPropertyToDefault(property: string): ()`**: Resets a property to its default value.
- **Method `SetAttribute(attribute: string, value: Variant): ()`**: Sets the attribute with the given name to the given value.
- **Method `WaitForChild(childName: string, timeOut: double): Instance`**: Returns the child of the Instance with the given name. If the
- **Event `AncestryChanged`**: Fires when the Instance.Parent property of this object or one of
- **Event `AttributeChanged`**: Fires whenever an attribute is changed on the Instance.
- **Event `ChildAdded`**: Fires after an object is parented to this Instance.
- **Event `childAdded`**:  *(deprecated)*
- **Event `ChildRemoved`**: Fires after a child is removed from this Instance.
- **Event `DescendantAdded`**: Fires after a descendant is added to the Instance.
- **Event `DescendantRemoving`**: Fires immediately before a descendant of the Instance is removed.
- **Event `Destroying`**: Fires immediately before (or is deferred until after) the instance is
- **Event `StyledPropertiesChanged`**: Fires whenever any style property is changed on the instance, including

### From [Object](/docs/reference/engine/classes/Object.md)

- **Property `ClassName`** (`string`): A read-only string representing the class this Object belongs to.
- **Property `className`** (`string`):  *(deprecated)*
- **Method `GetPropertyChangedSignal(property: string): RBXScriptSignal`**: Get an event that fires when a given property of the object changes.
- **Method `IsA(className: string): boolean`**: Returns true if an object's class matches or inherits from a given class.
- **Method `isA(className: string): boolean`**:  *(deprecated)*
- **Event `Changed`**: Fires immediately after a property of the object changes, with some