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Learn Writing Functions | Functions
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Writing Functions

Parts of a Function

  • Declaration: It starts with the function keyword.

  • Name: The identifier for the function like ninjaController, lootBox, etc.

  • Parameters: Variables listed in parentheses that accept values when the function is called.

  • Body: A block of code inside curly braces {} which performs the function's actions.

  • Return Value: Optional statement to output a value. Without it, functions return undefined.

Example

ninja.js

ninja.js

index.html

index.html

preset.js

preset.js

copy
  • ninjaController : Controls the ninja by calling lootBox twice and moving right four times.

  • lootBox : Defines a set of actions (moving, picking sushi) for the ninja.

  • Parameter: Both functions take a ninja object that has methods like goRight() , goUp() , etc.

Each function organizes repeated actions into neat, reusable blocks, keeping your code simple and easy to update.

Task

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Solution

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SectionΒ 2. ChapterΒ 2
ninja.js

ninja.js

index.html

index.html

preset.js

preset.js

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book
Writing Functions

Parts of a Function

  • Declaration: It starts with the function keyword.

  • Name: The identifier for the function like ninjaController, lootBox, etc.

  • Parameters: Variables listed in parentheses that accept values when the function is called.

  • Body: A block of code inside curly braces {} which performs the function's actions.

  • Return Value: Optional statement to output a value. Without it, functions return undefined.

Example

ninja.js

ninja.js

index.html

index.html

preset.js

preset.js

copy
  • ninjaController : Controls the ninja by calling lootBox twice and moving right four times.

  • lootBox : Defines a set of actions (moving, picking sushi) for the ninja.

  • Parameter: Both functions take a ninja object that has methods like goRight() , goUp() , etc.

Each function organizes repeated actions into neat, reusable blocks, keeping your code simple and easy to update.

Task

Swipe to start coding

Solution

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

close

Awesome!

Completion rate improved to 3.57

Swipe to show menu

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