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JavaScript

Posted by Christopher Aporta
Christopher Aporta
24,258 Points

When creating a Constructor Function, is it best practice to use a Function Declaration or a Function Expression?

When creating a Constructor Function, is it best practice to use a Function Declaration...

function Person(name, age) {
  this.name = name;
  this.age = age;
}

a Function Expression...

var Person = function(name, age) {
  this.name = name;
  this.age = age;
};

or is it simply a matter of personal preference?

1 Answer

Dave McFarland
STAFF
Dave McFarland
Treehouse Teacher
Dave McFarland
Dave McFarland
Treehouse Teacher

It's really just a matter of personal preference, though a team might decide on a standard way of doing it.

The style shown in the Airbnb JavaScript Styleguide uses a function declaration.

Christopher Aporta
Christopher Aporta
24,258 Points

Got it. This styleguide is an awesome reference, and thanks for the quick response!

Dave McFarland
Dave McFarland
Treehouse Teacher
Dave McFarland
Dave McFarland
Treehouse Teacher

Yeah, the Airbnb is a well respected style guide in the industry.