The Scanner component for Retool Apps
An interface to scan a barcode or QR code using the device's camera.
Settings
Scanner includes the following configurable options when building apps in the IDE.
DataEvent handlersIgnore duplicate codesShow on desktopShow on mobileMaintain space when hiddenMarginAlways show in edit modeSingle scanStyles |
Properties
All properties for Scanner with supported data types or values. You can write JavaScript almost anywhere in Retool to manipulate or read property values.
cameraId
The ID of the camera to use.
global
Whether the object is globally scoped for use in all app pages.
Whether the component is visible.
id
The unique identifier.
ignoreDuplicates
Whether to ignore duplicate scans.
isHiddenOnDesktop
Whether the component is visible in the desktop layout.
isHiddenOnMobile
Whether the component is visible in the mobile layout.
maintainSpaceWhenHidden
Whether the component takes up space on the canvas if hidden
is true
.
paused
Whether the operation is paused.
pluginType
The plugin type.
showInEditor
Whether to remain visible in the editor if hidden
is true
.
singleScan
Whether to allow only a single scan.
timeBetweenScans
The time between scans, in milliseconds.
Methods
JavaScript API methods for interacting with Scanner. You can write JavaScript almost anywhere in Retool and use methods to manipulate data and property values.
clearValue
Clear the current values.
scanner.clearValue()
pause
Pause operation.
scanner.pause()
resume
Resume operation.
scanner.resume()
scrollIntoView
Scrolls the canvas or parent container so that the selected component appears in the visible area.
scanner.scrollIntoView(scrollIntoViewOptions)
Parameters
setHidden
Set the hidden
value to toggle whether the component is visible. Defaults to true
without a parameter.
scanner.setHidden(hidden)
Parameters
setIgnoreDuplicates
Whether to ignore duplicates.
scanner.setIgnoreDuplicates(ignoreDuplicates)
Parameters
setSingleScan
Whether to scan once.
scanner.setSingleScan(singleScan)
Parameters
setTimeBetweenScans
The time, in milliseconds, between scans.
scanner.setTimeBetweenScans(timeBetweenScans)
Parameters
Events
Events are triggered by user interactions, such as clicking a button or entering a value. Use event handlers to trigger queries or other actions in response to events.