I have a nested JSON structure, how can I return a specific value of a key from the structure depending on the value of an another key from the same structure.
Eg: My initial JSON is as follows
{
"movies": [
{
"movie_name": "The Unforgivable",
"movie_details": {
"director": "Nora Fingscheidt",
"lead_actor": "Sandra Bullock",
"genre": {
"romance": "no",
"drama": "yes",
"action": "no",
"comedy": "no"
}
}
},
{
"movie_name": "The Power Of The Dog",
"movie_details": {
"director": "Jane Campion",
"lead_actor": "Benedict Cumberbatch",
"genre": {
"romance": "yes",
"drama": "yes",
"action": "no",
"comedy": "no"
}
}
}
]
}
From this above structure I need to return the directors name who has done romance movie
so using the key value pair "romance": "yes" I need to return the director value.
In this example I'm expecting the result as
[Jane Campion]
You can use filter to filter romance movies, and then map the directors' names using map.
var data = { "movies": [ { "movie_name": "The Unforgivable", "movie_details": { "director": "Nora Fingscheidt", "lead_actor": "Sandra Bullock", "genre": { "romance": "no", "drama": "yes", "action": "no", "comedy": "no" } } }, { "movie_name": "The Power Of The Dog", "movie_details": { "director": "Jane Campion", "lead_actor": "Benedict Cumberbatch", "genre": { "romance": "yes", "drama": "yes", "action": "no", "comedy": "no" } } } ] }
console.log(data.movies.filter(movie => movie.movie_details.genre.romance == "yes").map(directorsArr => directorsArr.movie_details.director))At the first, you need to filter your objects based on romance genre.
let romanceMovies = data.movies.filter(movie => movie.movie_details.genre.romance === "yes")
then when you have romance movies you can map the result to get the directors name.
let romanceDirectors = romanceMovies.map(movie => movie.movie_details.director)