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What Is Script in Scratch Programming?

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Script in Scratch

The Script in Scratch programming is a set of instructions as a stack or collection of blocks connected with one another used for programming. Each block in the script has a separate and unique function and performs a specific task. The order of arranging locks to form a script is very important in Scratch as it determines the flow of any program or project. In Scratch, there’s an element known as Sprite. Sprite is like a character or an object that performs the action based on the script.


This is Chapter 5.2 in the
Scratch Tutorial for Beginners


Structure of Script in Scratch

Scripts have a specific structure in Scratch where each block used in the script has been designed in a specific way to do a specific purpose.

1. Hat blocks

Hat Blocks are the blocks used to start a script when any event occurs or any project begins. Hat Blocks can be Control Blocks, Extension Blocks, My Blocks, or Events Blocks.

"when green flag is clicked" events block

2. Stack blocks

Stack Blocks are rectangular blocks used to be added at the end of a script. These blocks are designed in such a way that they can be inserted above or below any other blocks. The majority of the blocks in Scratch are Stack Blocks as they are present in every category of blocks except for the Operator Blocks.

"change () effect by ()" sound block

3. Cap blocks

Cap Blocks are the blocks used to end a script. These blocks are designed in such a way that no other block can be inserted below these blocks. The working of these blocks is almost similar to Stack Blocks.

"delete this clone" control block

4. Reporter blocks and Boolean blocks

Reporter Blocks are the blocks used to report a value in a script. The value can be anything, from a number to a string. Boolean Blocks are elongated hexagonal blocks used to report Boolean values (only true or false) in a script. Boolean Blocks are considered special kinds of Reporter Blocks.

The only difference between Reporter Blocks and Boolean Blocks is Reporter Blocks report any value, number, or string, and Boolean Blocks only report values with true and false.

"distance to ()" sensing block
"touching ()" sensing block

What is a Script fragment in Scratch?

In Scratch, an incomplete script with no Hat Block is known as a Script Fragment. Since Script Fragment does not have any hat block to start the execution of the code, the Script Fragment doesn’t run in Scratch.

Every block present in Scratch is a Script Fragment because they are just single blocks, so they are considered incomplete. Script Fragment is available in the Backpack section of the Scratch. Script Fragments are generally used to create thumbnails in Scratch.

Different operations to do on Script in Scratch

1. Creation

To create a script in Scratch, simply just drag the blocks from the block palette to the code area.

2. Disassembling

To disassemble a script in Scratch, simply just drag the scripts apart from the scripting area.

3. Removing

To remove a script in Scratch, simply just select the script and select delete.

4. Executing

To execute a script in Scratch, simply just click on the script.

Script errors

Sometimes the user makes some errors while creating scripts for any project or program. So, whenever the user makes any error in any script, that particular block gets highlighted as red in color, and the entire script got paused. In some cases, the player ignores that particular red-colored trouble-causing block of the script and moves on with the rest of the script. Common script errors are mathematical errors like when the user tries to divide any number by zero or tries to find the square root of a negative number, trigonometric errors, etc.

Uses of Script in Scratch

There are plenty of uses of Script in Scratch, such as:

  1. Scripts are used to perform specific tasks in Scratch.
  2. It helps in managing the working of the project as scripts have many blocks and each block has a specific task to perform.

Frequently asked questions (FAQs)

What is Script in Scratch?
In Scratch, the Script is a set of instructions as a stack or collection of blocks connected with one another used for programming.

What are the different operations that can be done on scripts in Scratch?
The different operations that can be done on scripts in Scratch are creation, disassembling, removing, and executing.

What is Script Fragment in Scratch?
In Scratch, a Script fragment is an incomplete script with no Hat Block.

What is the use of scripts in Scratch?
Scripts help in managing the working of the project as scripts have many blocks and each block has a specific task to perform.

What are Cap Blocks in Scratch?
In Scratch, the Cap Blocks are used to end a script and designed in such a way that no other block can be inserted below these blocks.

We hope you understand what Script in Scratch is and its uses. If you have any doubts, you can ask your doubts in the comment section.

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