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JavaScript - iterate key/value pair from JSON

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Created by:

Dragontry

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In this article, we would like to show you how to iterate key/value pairs from JSON in JavaScript.

Practical example

Edit

In this example, we use Object.keys() method to get an array of object keys. Then we use forEach() to loop through the array of keys and print them in the console.

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const json = `
    {
        "a": "value1",
        "b": "value2",
        "c": "value3"
    }
`;
​
const data = JSON.parse(json);
const keys = Object.keys(data);
​
keys.forEach((key) => console.log('key: ' + key + ', value: ' + data[key]));