You can filter the items and still return and array like this:
entries.credits.crew.filter(function(member){ return member.job === "DirectorofPhotography" } );
You can also add this:
entries.credits.crew.filter(function(member){ return member.job === "DirectorofPhotography" } ).map(function(member){
return member.job+ ': ' + member.name;}).join(',');
Update 1
This is based on this Object, since the one provide does not seem to be in the correct format:
var entries = { "credits" : {"crew":[
{
"id": 7469,
"name": "JimUhls",
"department": "Writing",
"job": "Author",
"profile_path": null
},
{
"id": 7474,
"name": "RossGraysonBell",
"department": "Production",
"job": "Producer",
"profile_path": null
},
{
"id": 7475,
"name": "CeánChaffin",
"department": "Production",
"job": "Producer",
"profile_path": null
},
{
"id": 1254,
"name": "ArtLinson",
"department": "Production",
"job": "Producer",
"profile_path": "/dEtVivCXxQBtIzmJcUNupT1AB4H.jpg"
},
{
"id": 7477,
"name": "JohnKing",
"department": "Sound",
"job": "OriginalMusicComposer",
"profile_path": null
},
{
"id": 7478,
"name": "MichaelSimpson",
"department": "Sound",
"job": "OriginalMusicComposer",
"profile_path": null
},
{
"id": 7479,
"name": "JeffCronenweth",
"department": "Camera",
"job": "DirectorofPhotography",
"profile_path": null
},
{
"id": 7480,
"name": "JamesHaygood",
"department": "Editing",
"job": "Editor",
"profile_path": null
},
{
"id": 7481,
"name": "LarayMayfield",
"department": "Production",
"job": "Casting",
"profile_path": null
},
{
"id": 1303,
"name": "AlexMcDowell",
"department": "Art",
"job": "ProductionDesign",
"profile_path": null
},
{
"id": 7763,
"name": "RenKlyce",
"department": "Sound",
"job": "SoundEditor",
"profile_path": null
},
{
"id": 7764,
"name": "RichardHymns",
"department": "Sound",
"job": "SoundEditor",
"profile_path": null
},
{
"id": 7467,
"name": "DavidFincher",
"department": "Directing",
"job": "Director",
"profile_path": "/dcBHejOsKvzVZVozWJAPzYthb8X.jpg"
},
{
"id": 7468,
"name": "ChuckPalahniuk",
"department": "Writing",
"job": "Novel",
"profile_path": "/8nOJDJ6SqwV2h7PjdLBDTvIxXvx.jpg"
}
]
} };