ArticleZip > Multiple Fields With Same Key In Query Params Axios Request

Multiple Fields With Same Key In Query Params Axios Request

When you're working on building web applications, you'll often come across scenarios where you need to make HTTP requests to fetch data from an API.

If you're using Axios, a popular JavaScript library for making HTTP requests, you might encounter the need to send multiple parameters with the same key in your query string. This can be particularly useful when working with APIs that expect parameters in a specific format. Fortunately, Axios provides a straightforward way to achieve this.

To send multiple fields with the same key in the query parameters of an Axios request, you can simply pass an array of values for that key. Let's walk through how you can accomplish this:

Javascript

const axios = require('axios');

// Define an array of values for a key
const values = [1, 2, 3];

axios.get('https://api.example.com/data', {
  params: {
    key: values
  }
})
.then(response => {
  console.log(response.data);
})
.catch(error => {
  console.error(error);
});

In this example, we define an array `values` containing three values `[1, 2, 3]` that we want to send with the key `"key"` in the query parameters of our Axios GET request to `'https://api.example.com/data'`. By passing `params: { key: values }` in the Axios configuration object, Axios serializes the array values as separate parameters with the same key in the URL, resulting in a request URL like:
`https://api.example.com/data?key=1&key=2&key=3`

When the request is made, the server will receive the query string with multiple instances of the same key. This approach works seamlessly with various APIs that support this query string format.

It's important to note that not all APIs handle multiple parameters with the same key in the same way. Some APIs might expect these values to be sent in a different format, so make sure to consult the API documentation to ensure you are formatting the request correctly.

By using this technique, you can effectively work with APIs that require passing multiple fields with the same key in query parameters using Axios. It's a handy feature that can simplify your code and help you interact with different types of APIs more efficiently. I hope this guide helps you in your web development projects!

Would you like to learn more about Axios or have any other tech-related questions? Feel free to reach out with any queries, and I'll be happy to assist!

Related posts:

×