Reference & Documentation

A Script component.
Script is a wrapper for the <script> HTML5 element.

CAUTION: <script> is included for completeness, but you cannot execute
JavaScript code by providing it to a <script> element. Use a clientside
callback for this purpose instead.

For detailed attribute info see:

Access this documentation in your Python terminal with:


Our recommended IDE for writing Dash apps is Dash Enterprise’s
Data Science Workspaces,
which has typeahead support for Dash Component Properties.
Find out if your company is using
Dash Enterprise

children (list of or a singular dash component, string or number; optional):
The children of this component.

id (string; optional):
The ID of this component, used to identify dash components in
callbacks. The ID needs to be unique across all of the components in
an app.

n_clicks (number; default 0):
An integer that represents the number of times that this element has
been clicked on.

n_clicks_timestamp (number; default -1):
An integer that represents the time (in ms since 1970) at which
n_clicks changed. This can be used to tell which button was changed
most recently.

disable_n_clicks (boolean; optional):
When True, this will disable the n_clicks prop. Use this to remove
event listeners that may interfere with screen readers.

key (string; optional):
A unique identifier for the component, used to improve performance by
React.js while rendering components See for more info.

crossOrigin (string; optional):
How the element handles cross-origin requests.

defer (a value equal to: ‘defer’ or ‘DEFER’ | boolean; optional):
Indicates that the script should be executed after the page has been

integrity (string; optional):
Specifies a Subresource Integrity value that allows browsers to verify
what they fetch.

referrerPolicy (string; optional):
Specifies which referrer is sent when fetching the resource.

src (string; optional):
The URL of the embeddable content.

type (string; optional):
Defines the type of the element.

accessKey (string; optional):
Keyboard shortcut to activate or add focus to the element.

className (string; optional):
Often used with CSS to style elements with common properties.

contentEditable (string; optional):
Indicates whether the element’s content is editable.

dir (string; optional):
Defines the text direction. Allowed values are ltr (Left-To-Right) or
rtl (Right-To-Left).

draggable (string; optional):
Defines whether the element can be dragged.

hidden (a value equal to: ‘hidden’ or ‘HIDDEN’ | boolean; optional):
Prevents rendering of given element, while keeping child elements,
e.g. script elements, active.

lang (string; optional):
Defines the language used in the element.

role (string; optional):
Defines an explicit role for an element for use by assistive

spellCheck (string; optional):
Indicates whether spell checking is allowed for the element.

style (dict; optional):
Defines CSS styles which will override styles previously set.

tabIndex (string; optional):
Overrides the browser’s default tab order and follows the one
specified instead.

title (string; optional):
Text to be displayed in a tooltip when hovering over the element.

loading_state (dict; optional):
Object that holds the loading state object coming from dash-renderer.

loading_state is a dict with keys:

  • component_name (string; optional):
    Holds the name of the component that is loading.

  • is_loading (boolean; optional):
    Determines if the component is loading or not.

  • prop_name (string; optional):
    Holds which property is loading.