kl1p.com

Software and Development blog

Software, Development, IT

pass params axios get react with code examples 2

Vikram Arsid

Axios is a popular third-party HTTP client used in front-end web development. It provides an easy-to-use API for making HTTP requests to an API endpoint or server. One of the most common use cases of Axios is to fetch data from an API by making a GET request. However, sometimes we may need to pass some parameters to the API endpoint to get specific data. In this article, we will discuss how to pass parameters to Axios GET requests in a React component with code examples.

In React, we can use Axios to fetch data from an API endpoint or server by importing Axios into the component. Before we can make a GET request, we need to provide the API endpoint URL. For example, suppose we have an API endpoint that returns a list of users. In that case, the URL could be https://example.com/api/users.

To fetch data, we can make a GET request using the Axios get() method. We can pass the API endpoint URL as a parameter to this method. Here is how we can make a simple GET request with Axios in a React component:

import React, { useState, useEffect } from "react";
import axios from "axios";

const Users = () => {
  const [users, setUsers] = useState([]);

  useEffect(() => {
    axios.get("https://example.com/api/users").then((response) => {
      setUsers(response.data);
    });
  }, []);

  return (
    <div>
      {users.map((user) => (
        <div key={user.id}>{user.name}</div>
      ))}
    </div>
  );
};

export default Users;

In the above code, we import Axios and create a functional component called Users. Inside the component, we create a state variable called users with an empty array as the default value. We use the useEffect() hook to make a GET request to the API endpoint, and when a response is received, we call the setUsers() function and pass in the response data. Finally, we loop through the users array and render the name of each user.

Now, let's say we want to pass some parameters to the API endpoint to get specific data. For example, we may want to get a list of users from a particular location. In this case, we can pass the location as a parameter to the API endpoint URL. Here is an example of how to do this with Axios:

import React, { useState, useEffect } from "react";
import axios from "axios";

const UsersByLocation = () => {
  const [users, setUsers] = useState([]);
  const [location, setLocation] = useState("London");

  useEffect(() => {
    axios
      .get(`https://example.com/api/users?location=${location}`)
      .then((response) => {
        setUsers(response.data);
      });
  }, [location]);

  const handleChange = (event) => {
    setLocation(event.target.value);
  };

  return (
    <div>
      <label>
        Select location:
        <select value={location} onChange={handleChange}>
          <option value="London">London</option>
          <option value="New York">New York</option>
          <option value="Paris">Paris</option>
        </select>
      </label>
      {users.map((user) => (
        <div key={user.id}>{user.name}</div>
      ))}
    </div>
  );
};

export default UsersByLocation;

In the above code, we create a new functional component called UsersByLocation. Inside the component, we create a new state variable called location with the default value of "London". We use the useEffect() hook to make a GET request to the API endpoint with the location parameter. We also pass location as a dependency to the useEffect() hook to re-run the effect when the location state changes. We create a function called handleChange() that sets the location state when the selected option changes. Finally, we render a dropdown menu and loop through the users array to display the name of each user.

To pass multiple parameters to the API endpoint, we can simply append them to the URL separated by an ampersand (&) like https://example.com/api/users?location=London&age=30. We can also pass parameters as an object using Axios by converting the object to a query string using the qs library. Here's an example:

import React, { useState, useEffect } from "react";
import axios from "axios";
import qs from "qs";

const UsersWithParams = () => {
  const [users, setUsers] = useState([]);
  const [params, setParams] = useState({});

  useEffect(() => {
    const queryString = qs.stringify(params);
    axios
      .get(`https://example.com/api/users?${queryString}`)
      .then((response) => {
        setUsers(response.data);
      });
  }, [params]);

  const handleChange = (event) => {
    setParams({ ...params, [event.target.name]: event.target.value });
  };

  return (
    <div>
      <label>
        Location:
        <input type="text" name="location" onChange={handleChange} />
      </label>
      <label>
        Age:
        <input type="number" name="age" onChange={handleChange} />
      </label>
      {users.map((user) => (
        <div key={user.id}>{user.name}</div>
      ))}
    </div>
  );
};

export default UsersWithParams;

In the above code, we create a new functional component called UsersWithParams. Inside the component, we create a new state variable called params as an object. We use the qs library to convert this object to a query string and append it to the API endpoint URL. We also pass params as a dependency to the useEffect() hook to re-run the effect when the params state changes. We create a function called handleChange() that updates the params state when any input field changes. Finally, we render two input fields for location and age and loop through the users array to display the name of each user.

In conclusion, Axios provides a powerful API to make HTTP requests to an API endpoint or server. We can pass parameters to Axios GET requests easily by appending them to the URL or passing them as an object using the qs library. In this article, we have discussed how to pass parameters to Axios GET requests in a React component with code examples.

let me expand on the previous topics mentioned in the article:

  1. Axios

Axios is a popular JavaScript library that allows developers to make HTTP requests to an external resource such as an API. It provides an easy-to-use API for making HTTP requests and can handle all HTTP request methods, such as GET, POST, PUT, DELETE, and more. With Axios, developers can easily fetch data from an API endpoint and manipulate it as needed. Axios also supports interceptors, which allow developers to modify or transform HTTP requests and responses before they occur. Axios is widely used in front-end web development and can be used with frameworks such as React, Vue, and Angular.

  1. Pass Parameters in Axios GET Request

When making a GET request with Axios, developers can pass parameters to the API endpoint to get specific data. This is often done by appending parameters to the URL using the query string format: https://example.com/api/users?location=London&age=30. Developers can also pass parameters as an object using the qs library, which converts the object to a query string to be appended to the URL. Passing parameters allows developers to filter or search data from the API, making it more efficient and targeted.

  1. React UseEffect Hook

The useEffect hook is a built-in React hook that allows developers to perform side effects in functional components. Side effects can include loading external data, subscribing to events, manipulating the DOM, and more. The useEffect hook takes a function as its argument, which is executed every time the component is rendered. Developers can use the useEffect hook to fetch data from an API endpoint when the component mounts, update the component state, and rerender the component based on changes in the component state or other dependencies.

  1. React Functional Components

Functional components are one of the two main types of components in React, the other being class components. Functional components are written as functions that take props as input and return a React element (JSX) as output. Functional components are often used in React because they are easier to write, test, and maintain than class components. Functional components are also simpler and less verbose than class components and are recommended in React applications whenever possible. Functional components can use hooks such as useState, useEffect, and useContext to manage state, effects, and context within the component.

  1. React JSX

JSX is a syntax extension for JavaScript that allows developers to write HTML-like code directly in their JavaScript files. JSX is used extensively in React to create, render, and manipulate elements within functional and class components. JSX allows developers to write reusable, modular components that are easy to read and understand. JSX takes the form of XML-like tags that can contain JavaScript expressions, values, and logic. JSX is compiled to JavaScript during the build process, making it compatible with all modern browsers.

Overall, these topics are fundamental to modern front-end web development and are essential for building responsive, efficient applications. Developers who use React and Axios can take advantage of these features and techniques to create robust, scalable, and maintainable web applications.

Popular questions

  1. What is Axios, and how does it help with HTTP requests in React?

Axios is a popular third-party HTTP client used in front-end web development that provides an easy-to-use API for making HTTP requests to an API endpoint or server. With Axios, developers can easily fetch data from an API endpoint and manipulate it as needed. Axios can handle all HTTP request methods, such as GET, POST, PUT, DELETE, and more.

  1. How can developers pass parameters in an Axios GET request to an API endpoint?

Developers can pass parameters to Axios GET requests by appending them to the URL in query string format or passing them as an object using the qs library, which converts the object to a query string to be appended to the URL. Passing parameters allows developers to filter or search data from the API, making it more efficient and targeted.

  1. What is the useEffect hook in React, and how can it be used with Axios?

The useEffect hook is a built-in React hook that allows developers to perform side effects in functional components. Side effects can include loading external data, subscribing to events, manipulating the DOM, and more. Developers can use the useEffect hook to fetch data from an API endpoint when the component mounts, update the component state, and rerender the component based on changes in the component state or other dependencies.

  1. What are functional components in React, and why are they preferred over class components?

Functional components are one of the two main types of components in React, the other being class components. Functional components are written as functions that take props as input and return a React element (JSX) as output. Functional components are often used in React because they are easier to write, test, and maintain than class components. Functional components are also simpler and less verbose than class components, making them faster to build and easier to read and understand.

  1. What is JSX in React, and how is it used in building components?

JSX is a syntax extension for JavaScript that allows developers to write HTML-like code directly in their JavaScript files. JSX is used extensively in React to create, render, and manipulate elements within functional and class components. JSX allows developers to write reusable, modular components that are easy to read and understand. JSX takes the form of XML-like tags that can contain JavaScript expressions, values, and logic. JSX is compiled to JavaScript during the build process, making it compatible with all modern browsers.

Tag

AxiosParams.

Example usage:

import axios from 'axios';

const fetchData = async (param1, param2) => {
  const response = await axios.get(`https://example.com/api/data?param1=${param1}&param2=${param2}`);

  return response.data;
}

const ExampleComponent = () => {
  const [data, setData] = useState(null);

  useEffect(() => {
    const fetchDataAsync = async () => {
      const result = await fetchData('value1', 'value2');
      setData(result);
    }

    fetchDataAsync();
  }, []);

  if (!data) {
    return <div>Loading...</div>;
  }

  return (
    <div>
      {/* display data */}
    </div>
  )
}
As a developer, I have experience in full-stack web application development, and I'm passionate about utilizing innovative design strategies and cutting-edge technologies to develop distributed web applications and services. My areas of interest extend to IoT, Blockchain, Cloud, and Virtualization technologies, and I have a proficiency in building efficient Cloud Native Big Data applications. Throughout my academic projects and industry experiences, I have worked with various programming languages such as Go, Python, Ruby, and Elixir/Erlang. My diverse skillset allows me to approach problems from different angles and implement effective solutions. Above all, I value the opportunity to learn and grow in a dynamic environment. I believe that the eagerness to learn is crucial in developing oneself, and I strive to work with the best in order to bring out the best in myself.
Website https://www.linkedin.com/in/vikramarsid/
Posts created 3245

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Posts

Begin typing your search term above and press enter to search. Press ESC to cancel.

Back To Top