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)
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