Output Json Arrays with Javascript
Solution 1
Another way to iterate:
results.genres.forEach(function(genre) {
console.log(genre.name);
});
For what you're trying to do:
$('#tmdbInfo2').html(
'Genres: ' + results.genres.map(function(genre) {
return genre.name;
}).join(', ')
);
Solution 2
Plain Javascript
This is how you iterate on the elements of an array, using a for
loop (do not use a for...in
loop on arrays, if you ever get tempted).
for (var i = 0; i < results.genres.length; i++) {
console.log( results.genres[i].name );
}
Your array is called results.genres
here. Inside the loop, results.genres[i]
will always refer to the current element.
jQuery
I see that you are using jQuery, so you can also use $.each()
like this:
$.each(results.genres, function (currentIndex, currentElem) {
console.log( currentElem.name );
});
Solution 3
You can access array values by using a for-in loop like this:
var result = "";
for (i in genres.name) {
result += genres.name[i];
}
console.log(result);
RaveN
Updated on January 07, 2020Comments
-
RaveN over 4 years
I am really new to Javascript and Json and need help with the following. This is some json data:
"genres": [ { "id": 28, "name": "Action" }, { "id": 18, "name": "Drama" }, { "id": 14, "name": "Fantasy" }, { "id": 36, "name": "History" } ],
Now I would like to output all names of genres
I'm working with jquery mobile and ajax to retrieve json data. Inside my function it looks sth like this:
var genres = results.genres[0].name; $('#tmdbInfo2').html('<br>Genres: ' +genres);
In this example the first element of genres will we shown (Action), but not all. The output should be: Action, Drama, Fantasy, History. Sometimes the number of elements of genres varies..
Please help me, its very confusing for me O_o