𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀 𝗘𝘅𝗽𝗹𝗮𝗶𝗻𝗲𝗱

𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀 𝗘𝘅𝗽𝗹𝗮𝗶𝗻𝗲𝗱

Functions are blocks of code. You write them once and use them many times. They perform specific tasks.

Why you need them:

• They help you reuse code.
• They organize your code into small parts.
• They make your code easy to read.

How they work: A function sits idle until you call it. To run a function, use its name followed by parentheses. The parentheses tell the computer to execute the code now.

Syntax rules:

• Use the function keyword.
• Give the function a name.
• Add parentheses ( ) for inputs.
• Use curly brackets { } for the code logic.

Inputs and outputs: Functions work in a cycle.

• Parameters: You send values into the function.
• Arguments: The function receives these values.
• Logic: The function performs an action.
• Return: The function sends a result back to you.

You can store the result of a function in a variable.

Local variables: Variables created inside a function stay inside that function. This is called local scope.

• You cannot access these variables from outside the function.
• The computer creates them when the function starts.
• The computer deletes them when the function ends.
• This allows you to use the same variable names in different functions without errors.

Source: https://www.w3schools.com/js/js_function_intro.asp

Full post: https://dev.to/vidhya_murali_5aabe7784bd/functions-in-javascript-38h8

Optional learning community: https://t.me/GyaanSetuAi