Using Functions
Why Use Functions?
Repeating code makes programs long and hard to maintain. Functions let you group commands into a reusable block, reducing repetition and making your code cleaner.
How to call Functions?
To call a function, simply use its name followed by parentheses, placing any required arguments inside those parentheses.
In the example below, the greet
function is called on line 5 by adding parentheses to its name and passing "Alice" as the name argument.
A Simple Function Example
12345function greet(name) { console.log("Hello, " + name + "!"); } greet("Alice");
Here’s what happens when you call greet("Alice")
:
- JavaScript looks for the function named
greet
. - It passes the string "Alice" as the argument for the parameter
name
. - Inside the function, the console.log statement concatenates "Hello, ", the value "Alice", and "!" to create the full greeting.
- The final message "Hello, Alice!" is then printed to the console.
Swipe to start coding
Lösung
Danke für Ihr Feedback!
ninja.js
index.html
preset.js
Fragen Sie AI
Fragen Sie AI
Fragen Sie alles oder probieren Sie eine der vorgeschlagenen Fragen, um unser Gespräch zu beginnen
Awesome!
Completion rate improved to 3.57
Using Functions
Swipe um das Menü anzuzeigen
Why Use Functions?
Repeating code makes programs long and hard to maintain. Functions let you group commands into a reusable block, reducing repetition and making your code cleaner.
How to call Functions?
To call a function, simply use its name followed by parentheses, placing any required arguments inside those parentheses.
In the example below, the greet
function is called on line 5 by adding parentheses to its name and passing "Alice" as the name argument.
A Simple Function Example
12345function greet(name) { console.log("Hello, " + name + "!"); } greet("Alice");
Here’s what happens when you call greet("Alice")
:
- JavaScript looks for the function named
greet
. - It passes the string "Alice" as the argument for the parameter
name
. - Inside the function, the console.log statement concatenates "Hello, ", the value "Alice", and "!" to create the full greeting.
- The final message "Hello, Alice!" is then printed to the console.
Swipe to start coding
Lösung
Danke für Ihr Feedback!
Awesome!
Completion rate improved to 3.57ninja.js
index.html
preset.js