JavaScript examples

Importing the library

To import the library in a CommonJS environment, you can use the require function, or the import statement if you are using a bundler like Webpack or Rollup.

No bundler

const axios = require("axios");

With bundler (webpack, rollup, vite, etc)

import axios from "axios";

Using then/catch/finally

Since axios returns a promise at it's core you can choose to use callbacks with then, catch, and finally to handle your response data, errors, and completion.

Get request

axios
  .get("https://jsonplaceholder.typicode.com/posts", {
    params: {
      postId: 5,
    },
  })
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error(error);
  })
  .finally(() => {
    console.log("Request completed");
  });

Post request

axios
  .post("https://jsonplaceholder.typicode.com/posts", {
    title: "foo",
    body: "bar",
    userId: 1,
  })
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error(error);
  })
  .finally(() => {
    console.log("Request completed");
  });

Put request

axios
  .put("https://jsonplaceholder.typicode.com/posts/1", {
    title: "foo",
    body: "bar",
    userId: 1,
  })
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error(error);
  })
  .finally(() => {
    console.log("Request completed");
  });

Patch request

axios
  .patch("https://jsonplaceholder.typicode.com/posts/1", {
    title: "foo",
  })
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error(error);
  })
  .finally(() => {
    console.log("Request completed");
  });

Delete request

axios
  .delete("https://jsonplaceholder.typicode.com/posts/1")
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.error(error);
  })
  .finally(() => {
    console.log("Request completed");
  });

Using async/await

Another way to handle promises is by using async and await. This allows you to use try/catch/finally blocks to handle errors and completion. This can make your code more readable and easier to understand, this also helps prevents so called callback hell.

TIP

Note: async/await is part of ECMAScript 2017 and is not supported in Internet Explorer and older browsers, so use with caution.

Get request

const getPosts = async () => {
  try {
    const response = await axios.get(
      "https://jsonplaceholder.typicode.com/posts",
      {
        params: {
          postId: 5,
        },
      }
    );
    console.log(response.data);
  } catch (error) {
    console.error(error);
  } finally {
    console.log("Request completed");
  }
};

Post request

const createPost = async () => {
  try {
    const response = await axios.post(
      "https://jsonplaceholder.typicode.com/posts",
      {
        title: "foo",
        body: "bar",
        userId: 1,
      }
    );
    console.log(response.data);
  } catch (error) {
    console.error(error);
  } finally {
    console.log("Request completed");
  }
};

Put request

const updatePost = async () => {
  try {
    const response = await axios.put(
      "https://jsonplaceholder.typicode.com/posts/1",
      {
        title: "foo",
        body: "bar",
        userId: 1,
      }
    );
    console.log(response.data);
  } catch (error) {
    console.error(error);
  } finally {
    console.log("Request completed");
  }
};

Patch request

const updatePost = async () => {
  try {
    const response = await axios.patch(
      "https://jsonplaceholder.typicode.com/posts/1",
      {
        title: "foo",
      }
    );
    console.log(response.data);
  } catch (error) {
    console.error(error);
  } finally {
    console.log("Request completed");
  }
};

Delete request

const deletePost = async () => {
  try {
    const response = await axios.delete(
      "https://jsonplaceholder.typicode.com/posts/1"
    );
    console.log(response.data);
  } catch (error) {
    console.error(error);
  } finally {
    console.log("Request completed");
  }
};