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App Lab Documentation

UI controls
button
checkbox
deleteElement
dropdown
getChecked
getImageURL
getNumber
getProperty()
getText
getXPosition
getYPosition
hideElement
image
onEvent
open
playSound
playSpeech()
radioButton
rgb()
setChecked
setImageURL
setNumber
setPosition
setProperty()
setScreen
setSize
setText
showElement
stopSound
textInput
textLabel
write
Canvas
circle(x, y, radius)
clearCanvas()
createCanvas(id, width, height)
drawImage(id, x, y, width, height)
drawImageURL(url)
getAlpha(imageData, x, y)
getBlue(imageData, x, y)
getGreen(imageData, x, y)
getImageData(x, y, width, height)
getRed(imageData, x, y)
line(x1, y1, x2, y2)
putImageData(imageData, x, y)
rect(x, y, width, height)
setActiveCanvas
setAlpha(imageData, x, y, alphaValue)
setBlue(imageData, x, y, blueValue)
setFillColor(color)
setGreen(imageData, x, y, greenValue)
setRGB(imageData, x, y, red, green, blue, *alpha*)
setRed
setStrokeColor(color)
setStrokeWidth(width)
Data
createRecord
createRecordSync
deleteRecord(table, record, callback)
drawChart(chartId, chartType, chartData, *options*, *callback*)
drawChartFromRecords
getColumn
getKeyValue(key, callback)
getPrediction
getUserId()
readRecords
readRecordsSync
setKeyValue
startWebRequest
updateRecord
Turtle
arcLeft
arcRight
dot
getDirection
getX
getY
hide
move
moveBackward
moveForward
moveTo
penColor
penDown
penRGB
penUp
penWidth
show
speed
turnLeft(*angle*)
turnRight
turnTo
Control
If statement
If/else statement
While loop
clearInterval(interval)
clearTimeout(timeout)
for loop
getTime
setInterval
setTimeout
stopTimedLoop()
timedLoop()
Math
Add Operator
And Operator
Divide operator
Equality operator
Greater than operator
Greater than or equal operator
Inequality operator
Less than operator
Less than or equal operator
Math.abs(x)
Math.max(n1, n2, ..., nX)
Math.min(n1, n2, ..., nX)
Math.pow
Math.random
Math.round(x)
Math.sqrt
Modulo operator
Multiply operator
Not operator
Or operator
Subtract operator
randomNumber(min, max)
randomNumber(min, max)
Variables
Access List Item
Assign x
Declare a variable
Declare an object
Declare and assign a string to a variable
Declare and assign a value to a variable
Declare and assign an array ["a", "b", "d"] to a variable
Declare and assign an array [1,2,3] to a variable
Declare and assign an array to a variable
Prompt the user for a numerical value and store it
Prompt the user for a value and store it
[list].join
[list].length
[string].includes(searchValue)
[string].indexOf(searchValue)
[string].substring(start, end)
[string].toLowerCase()
[string].toUpperCase()
addPair
appendItem(list, item)
console.log(message)
getValue
insertItem(list, index, item)
length
removeItem(list, index)
Functions
Call a function
Call a function with parameters
Comment
Define a function
Define a function with parameters
return
Advanced
setStyle()
Maker
analogRead()
analogWrite()
boardConnected
createButton()
createLed()
digitalRead()
digitalWrite()
pinMode()
Circuit
accelerometer
accelerometer.getAcceleration
accelerometer.getOrientation
button(L/R)
buttonL.holdtime
buttonL.isPressed
buzzer
buzzer.frequency()
buzzer.note()
buzzer.play()
buzzer.playNotes
buzzer.playSong
buzzer.stop()
colorLeds
colorLeds[i].blink()
colorLeds[i].color()
colorLeds[i].intensity()
colorLeds[i].off()
colorLeds[i].on()
colorLeds[i].pulse()
colorLeds[i].stop()
colorLeds[i].toggle()
led
led.blink()
led.off()
led.on()
led.pulse()
led.toggle()
lightSensor
lightSensor.setScale
lightSensor.start
lightSensor.threshold
lightSensor.value
onBoardEvent()
soundSensor
soundSensor.setScale
soundSensor.threshold
soundSensor.value
tempSensor
tempSensor.C
tempSensor.F
toggleSwitch
toggleSwitch.isOpen
micro:bit
ledScreen.clear
ledScreen.display
ledScreen.off
ledScreen.on
ledScreen.scrollNumber
ledScreen.scrollString
ledScreen.toggle

open

Category:UI controls

Syntax

open(url)

Parameters

NameTypeRequired?Description
urlstring

The URL to open.

Tips

  • The open URL requires the full http:// prefix.

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