how to access value from array json object - javascript

Question

I am beginner please help me to get value from the below array json object.

[{"Category":"HI","Sub Category":"AQ HIOP"},
{"Category":"2HJ","Sub Category":"AS HIOP"},
{"Category":"3HJ","Sub Category":"AT HIOP"},
{"Category":"4Hj","Sub Category":"AP HIOP"},
{"Category":"5HJ","Sub Category":"AN HIOP"},
]

I would just need the value of Sub Category

Thanks in Advance.

`arr[0]['Sub Category']` to access the Sub Category of the first element — Eddie, Oct 04 '18 at 15:29
http://benalman.com/news/2010/03/theres-no-such-thing-as-a-json/ — Quentin, Oct 04 '18 at 15:34
What do you mean by "the value of Sub Category"? There are 5 different values, which one do you want? — Barmar, Oct 04 '18 at 16:11

score 1 · Answer 1 · edited Oct 21 '18 at 13:26

1

You have multiple ways to do it. If you have your Object in a variable you can access like this:

var test = [{"Category":"HI","Sub Category":"AQ HIOP"},
{"Category":"2HJ","Sub Category":"AS HIOP"},
{"Category":"3HJ","Sub Category":"AT HIOP"},
{"Category":"4Hj","Sub Category":"AP HIOP"},
{"Category":"5HJ","Sub Category":"AN HIOP"},
]

test[0]["Sub Category"] //Take into account that you have an array

In the case that you don't have any space in the key you can access like this:

test[0].Category;

If your JSON is string you must use JSON.parse before.

Edit

Here you have how to insert to a new array

var another_array = []
another_array.push({"New category": test[0]["Sub Category"]})

edited Oct 21 '18 at 13:26

halfer

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answered Oct 04 '18 at 15:30

Brank Victoria

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Sure, you just need to declare a variable array and then use the push method to insert items in it. – Brank Victoria Oct 04 '18 at 15:38
thanks. is it possible to assign the output value to another array like below. another_array = ["New Category",test[0]["Sub Category"]] – Dython Oct 04 '18 at 15:39
1

Take a look to the edit of the answer – Brank Victoria Oct 04 '18 at 15:42

Alejandro Gonzalez · Answer 2 · 2018-10-04T15:44:20.973

Try this:

var arr = [{"Category":"HI","Sub Category":"AQ HIOP"},
    {"Category":"2HJ","Sub Category":"AS HIOP"},
    {"Category":"3HJ","Sub Category":"AT HIOP"},
    {"Category":"4Hj","Sub Category":"AP HIOP"},
    {"Category":"5HJ","Sub Category":"AN HIOP"},
    ]
    for (var i = 0; i < arr.length; i++) {
     for (key in arr[i]) {
      console.log('Key: '+ key + ' Value: ' + arr[i][key]);
     }
    }

You can use for and for in to access to your Objet

score 0 · Answer 3 · answered Oct 04 '18 at 15:42

var test = [
{"Category":"HI","Sub Category":"AQ HIOP"},
{"Category":"2HJ","Sub Category":"AS HIOP"},
{"Category":"3HJ","Sub Category":"AT HIOP"},
{"Category":"4Hj","Sub Category":"AP HIOP"},
{"Category":"5HJ","Sub Category":"AN HIOP"},
];
test.forEach(function(item){
    console.log(item);
})

how to access value from array json object - javascript

3 Answers3

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