How to extend array or object prototype for a specific javascript object?

Question

Say I have the following:

function Myobj = {
   name: "Julia",
   birthdate: "xxxx",
   genres: [],
   movies: [{title: "movie1", rating: 5, genre: "Horror"}, {title: "movie2", rating 3, genre: "Comedy"},{title: "movie3", rating 3, genre: "Comedy"}, {title: "movie4", rating 3, genre: "Comedy"}, {title: "movie5", rating 3, genre: "Horror"}]
}

What I want to be able to do is have some function like:

Myobj.prototype.pushMovie(somejson) {
   // code to add somejson to "movies", and add the "genre" to the "genres" array
}

Such that I can go:

obj1 = new Myobj();
obj1.pushMovie({title: "movie1", rating: 5, genre: "Horror"});

Or is it better practice to override the array prototype? If so, is it possible to give a prototype a specific array as opposed to all arrays like:

Myobj.Array.prototype.pushMovie() {
// code to inherit from regular push, and do some operation to add to "genres"
}

I do not know what the syntactically correct or best approach is.

First idea is fine. No need to add to Array.

ThinkingStiff
– ThinkingStiff

2012-07-12 18:24:28 +00:00
Commented Jul 12, 2012 at 18:24 — ThinkingStiff
– ThinkingStiff, Commented Jul 12, 2012 at 18:24

Larry Battle · Accepted Answer · 2012-07-12 18:21:54Z

2

Why not this?

Myobj.prototype.addMovie(somejson) {
   this.movies.push( somejson );
}
Myobj.prototype.addGenre(somejson) {
   this.genres.push( somejson );
}
Myobj.prototype.pushMovie = Myobj.prototype.addMovie;

answered Jul 12, 2012 at 18:21

Larry Battle

9,1985 gold badges43 silver badges55 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to extend array or object prototype for a specific javascript object?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related