How to extract only JSON values by removing keys

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I have an array with some ids, the return object of my request to Webservice is as shown in code snippet number 1.

I wanted to know if you have any way via jQuery, to extract only the values and leave my JSON as shows the object of the second snippet of code:

  1. How are you: 

       [{
            "id": "1"
        }, {
            "id": "2"
        }, {
            "id": "3"
        }, {
            "id": "4"
        }, {
            "id": "5"
        }]

  2. How I wish you were:

    ["1","2","3","4","5"]
javascript angularjs json

  • It is necessary to first transform the string into an object, using for example JSON.parse() and then vc can go through the array and get the ids.

  • But it is already in JSON format, I made the request to the web service via angular and it returns me using echo json_encode($reply)

1 answer

2


You can use the method Array.map to extract only the ids.

Example:

let dados = [
    { "id": "1" },
    { "id": "2" },
    { "id": "3" },
    { "id": "4" },
    { "id": "5" }
];

let ids = dados.map(item => item.id);

console.log(ids);

If you can’t use Arrow functions, another example:

var dados = [
    { "id": "1" },
    { "id": "2" },
    { "id": "3" },
    { "id": "4" },
    { "id": "5" }
];

var ids = dados.map(function(item) {
    return item.id;
});

console.log(ids);

  • Thank you very much was that, I used some wrong term or there is something I can improve the question for those who search understand more clearly and objectively?

  • You can exchange "I have a JSON" for "I have an array". It makes no difference where it came from, your question is how to extract the data from this array to another

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