Certainly! In JavaScript, curly braces {} are used to define the start and end of a block of code associated with control structures such as if, else, for, while, and functions. Here are some examples to illustrate their use in the context of ARC JavaScript:

If Statement

if (condition) {
  // Code to execute if the condition is true
} else {
  // Code to execute if the condition is false
}

For Loop

for (initialization; condition; increment) {
  // Code to execute on each loop iteration
}

While Loop

while (condition) {
  // Code to execute as long as the condition is true
}

Function Definition

function myFunction(parameters) {
  // Code to execute when the function is called
}

Example in ARC JavaScript

Here's an example of how you might use these structures in an ARC JavaScript script:

// Define a function to move a servo to a random position
function moveServoRandomly(port) {
  var randomPosition = Math.floor(Math.random() * 180) + 1; // Random position between 1 and 180
  Servo.setPosition(port, randomPosition); // Move servo to the random position
}

// Check a condition and call the function if true
if (getVar("$IsSpeaking") === false) {
  moveServoRandomly("D0"); // Call the function with the servo port
} else {
  console.log("The robot is currently speaking.");
}

// Loop through a set of actions
for (var i = 0; i < 5; i++) {
  moveServoRandomly("D1"); // Move a different servo
  sleep(1000); // Wait for 1 second
}

In this example, we define a function moveServoRandomly that moves a servo to a random position. We then use an if statement to check if the robot is not speaking before moving a servo. We also use a for loop to move another servo five times, pausing for one second between each move.

Remember that in JavaScript, the use of curly braces is essential for defining the scope of code blocks, and every opening brace { must have a corresponding closing brace }.

@DJ, I installed this last revised you worked on for me and it runs beautifully. I only had to go in and define the soundboard sound tracks that the ConrtolComands called. I just needed to add parentheses to define them.

Just for the record, this is an example of what I had that didn't work in the JS Script:

controlCommand("Soundboard v4", Track_64)

This is the correct format with the parentheses added that defines the action that works:

controlCommand("Soundboard v4", "Track_64")

I didn't have the parentheses in EZ Script and everything worked fine. I'm surprised. I do see in the EZ Script Cheat Sheet that this command should have the parentheses. It must be one of your magic tricks you have hidden behind the EZ Script curtain. LOL

Again, thanks for all your work on this and the wonderful JavaScript lesson.

Nice - that's great to hear. Sorry i forgot about the plain text arguments.

In real programming languages, plain text arguments that are strings need to be surrounded by "quotes".

So, you can't do something like this

print(Hello World")

because  Hello World is a string parameter and therefore needs to be in quotes like this...

print("Hello World")

The same thing applies to any function that takes string arguments. In your case, it was the control command. Therefore, the ControlCommand() needed a string as a parameter which is Track_XXXX. Therefor, you need to surround "Track_XXXX" in quotes.

@DJ, No need to be sorry for anything. You went above and beyond for me in this conversion and the lesions you taught me. Again, many thanks. 

Love this thread.  It is inspiring me to start using JavaScript now!  Thanks Dave and DJ!

Dave.  I have a question did you convert from EzScript the commands to move your torso?   If you did could you provide me a piece of code.  I cant seem to get the EzScript to convert correclty.  Here is my EzScript  uartWrite(4, 1, "1, p32455 s10000", 0x0d)    i've tried all the commands in the uart and i cant figure out the conversion.

Hi @dbeard. It's good to hear form you. I Hope all is well in your world.

I assume you're converting your EZ Scripts into JavaScript? Judging from the command you are using you're sending this command to a Sabertooth with a Kangaroo for position and speed control. If so, here's what I have for a JavaScript command to move my torso through my Kangaroo controller:

UART.hardwareUartWriteString(0,"1, p113261 s10000\r",1); // Move Waist Motor to 1/2 right Position, EZB 1, Uart Port 0

A few things to look at here;

*The first 0 is the Uart Port. This placement is different then in EZ Script (make sure you are Initializing your EZB Uart ports before you try to use them. You only have to do this once).

*The commands inside the parentheses " " are the Kangaroo commands. Notice I'm now using the \r as a return instead of 0x0d. The Kangaroo always needs a Return at the end of a command. Also, I think JavaScript may have issues with the 0x0d format but \r works.(make sure you are starting the Kangaroo Channels you are powering the motor with before you try to use them. You should only have to do this once).

*The last 1 is the EZB connection number. This placement is different then in EZ Script.

*The last ; is like punctuation in a sentence. It makes the commands easer to read but are not really necessary. Like some people never use in posts in social media. Don't get me started on that. LOL.

*Everything after the // are my remarks.

I hope this helps.