I have a json object as following :
I would like for each entry that has the attribute title
to add a unique id, so my json object would look like this :
and in another version I want to add a unique id for each entry, so it would look like this:
How can I do that ?
Edit:
This is my json object :
I have a json object as following :
I would like for each entry that has the attribute title
to add a unique id, so my json object would look like this :
and in another version I want to add a unique id for each entry, so it would look like this:
How can I do that ?
Edit:
This is my json object : https://api.myjson./bins/59prd
Share Improve this question edited Jun 20, 2020 at 9:12 CommunityBot 11 silver badge asked Dec 5, 2016 at 10:33 Renaud is Not Bill GatesRenaud is Not Bill Gates 2,08438 gold badges115 silver badges212 bronze badges 4-
use
for ... in
to loop over the object and add an identifier. – Luuuud Commented Dec 5, 2016 at 10:36 - 4 please add the code/objects as text, not as image. – Nina Scholz Commented Dec 5, 2016 at 10:38
- @NinaScholz, please check my edit – Renaud is Not Bill Gates Commented Dec 5, 2016 at 10:46
- @YukinaSpoonatte, please have a look here: minimal reproducible example – Nina Scholz Commented Dec 5, 2016 at 10:47
2 Answers
Reset to default 4You can use for...in
to loop over the object and add unique identifiers.
var iterator = 0; // this is going to be your identifier
function addIdentifier(target){
target.id = iterator;
iterator++;
}
function loop(obj){
for(var i in obj){
var c = obj[i];
if(typeof c === 'object'){
if(c.length === undefined){
//c is not an array
addIdentifier(c);
}
loop(c);
}
}
}
loop(json); // json is your input object
You could use a closure addId
for the callback for iterateing the array and use the inner callback iter
for nested arrays.
With the call addId
, you can specify an index to start with.
function addId(id) {
return function iter(o) {
if ('title' in o) {
o.id = id++;
}
Object.keys(o).forEach(function (k) {
Array.isArray(o[k]) && o[k].forEach(iter);
});
};
}
var data = [{ "Arts": [{ "Performing arts": [{ "Music": [{ "title": "Acpanying" }, { "title": "Chamber music" }, { "title": "Church music" }, { "Conducting": [{ "title": "Choral conducting" }, { "title": "Orchestral conducting" }, { "title": "Wind ensemble conducting" }] }, { "title": "Early music" }, { "title": "Jazz studies" }, { "title": "Musical position" }, { "title": "Music education" }, { "title": "Music history" }, { "Musicology": [{ "title": "Historical musicology" }, { "title": "Systematic musicology" }] }, { "title": "Ethnomusicology" }, { "title": "Music theory" }, { "title": "Orchestral studies" }, { "Organology": [{ "title": "Organ and historical keyboards" }, { "title": "Piano" }, { "title": "Strings, harp, oud, and guitar" }, { "title": "Singing" }, { "title": "Strings, harp, oud, and guitar" }] }, { "title": "Recording" }] }, { "Dance": [{ "title": "Choreography" }, { "title": "Dance notation" }, { "title": "Ethnochoreology" }, { "title": "History of dance" }] }, { "Television": [{ "title": "Television studies" }] }, { "Theatre": [{ "title": "Acting" }, { "title": "Directing" }, { "title": "Dramaturgy" }, { "title": "History" }, { "title": "Musical theatre" }, { "title": "Playwrighting" }, { "title": "Puppetry" }] }] }] }];
data.forEach(addId(1))
console.log(data);
.as-console-wrapper { max-height: 100% !important; top: 0; }