JavaScript Patterns 4.9 Configuration Objects

Configuration Objects

Passing a large number of parameters is not convenient. A better approach is to substitute all the parameters with only one and make it an object.

var conf = {

    username: "batman",

    first: "Bruce",

    last: "Wayne"

};

addPerson(conf);

Pros

Cons

• No need to remember the parameters and their order

• You can safely skip optional parameters

• Easier to read and maintain

• Easier to add and remove parameters

• You need to remember the names of the parameters

• Property names cannot be minified

This pattern could be useful when your function creates DOM elements.

References:

JavaScript Patterns - by Stoyan Stefanov (O`Reilly)