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JavaScript Concise Arrow Function Syntax

Posted by nootorm noootm
nootorm noootm
1,856 Points

No argument function with a single line doesn't return the console.log() instead of calling it?

*I asked in the title

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

To call a function, place parentheses after the function name, even if it doesn't require any parameters.

To access the function itself, use the name without the parentheses after it.

macfael
macfael
14,476 Points
macfael
macfael
14,476 Points

I don't think so.

In this case, the function executes its code (the console.log statement) and then, when it's done, it returns undefined. This is because you didn't explicitly defined a return value for it.

For Example: 

const sayHello = name => console.log(`Hello, ${name}`);

const returnValue = sayHello("John");
console.log(returnValue);

/* You will see in the console:

    >> Hello, John
    >> undefined 

*/