What is axios and what is it used for?
Axios is a popular JavaScript library used to make HTTP requests from a web browser or Node.js application.
How do I install axios in my project?
You can install axios using npm or yarn. For example: npm install axios.
Why am I getting a "promise is undefined" error when using axios?
This error occurs when using axios without a polyfill for promises. You can solve this by either using a promise polyfill or upgrading to a newer version of node.js that supports promises.
What does the "Network Error" message mean when using axios?
This error usually means that the server you are trying to make a request to is not accessible. It could be due to network connectivity issues or the server being down.
How do I set headers for my axios requests?
You can set headers in the config object of your axios request. For example: axios.get(url, { headers: { "Content-Type": "application/json" }}).
Why am I getting a "TypeError: Cannot read property 'get' of undefined" error when using axios?
This error occurs when the axios object is not properly imported or initialized. Make sure you have imported axios correctly and have created an instance of it before making any requests.
What is the difference between axios.get and axios.post?
The axios.get method is used to make GET requests to a server, while axios.post is used to make POST requests and send data to a server.
Can I use axios to make cross-domain requests?
Yes, you can use axios to make cross-domain requests by setting the "withCredentials" option to "true" in the config object of your request.
How do I handle axios response errors?
You can use the .catch() method on your axios request to handle any errors returned by the server.
Why is my axios request returning a 401 Unauthorized error?
A 401 error usually means that you are not properly authenticated or authorized to access the requested resource. Check your credentials and make sure they are valid.
Can I cancel an axios request?
Yes, you can cancel an axios request by creating a cancel token and passing it in the config object of your request. Here's an example: https://github.com/axios/axios#cancellation.
How do I use axios with async/await?
You can use the axios "await" syntax with the "async" keyword to make your code more synchronous and readable. For example: const res = await axios.get(url).
Why am I getting a "Parsing error: Unexpected token <" when using axios?
This error usually means that you are trying to parse a non-JSON response from the server. Make sure the response is in a valid JSON format.
How do I send data with my axios request?
You can pass in data to your axios request using the "data" option in the config object. For example: axios.post(url, data, config).
What is the maximum size for data that can be sent with axios?
The maximum size for data that can be sent with axios depends on the server and any established limits. However, it is generally recommended to keep the data size under 10MB.
Why is my axios request returning a "Content Security Policy" error?
This error means that the server is rejecting the request due to a violation of its Content Security Policy. Check the server's CSP settings and make sure your axios request complies with them.
How do I set a timeout for my axios request?
You can set a timeout for your axios request by passing in the "timeout" option in the config object with the desired time limit in milliseconds. For example: axios.get(url, { timeout: 5000 }).
Why are my axios requests not working in Internet Explorer?
Older versions of Internet Explorer do not support promises, which axios relies on. You will need to use a promise polyfill to make axios work in IE.
How do I handle errors in multiple axios requests?
You can use the axios.all() method to make multiple requests and handle any errors with the axios.catch() method. Here's an example: https://github.com/axios/axios#interceptors.
Why is my axios request returning a "CORS" error?
This error occurs when the server does not allow cross-origin requests from your domain. You can either set up CORS on the server or use a proxy to handle the request.
Can I use axios in a React or Vue.js project?
Yes, axios can be used in React or Vue.js projects as it is a platform-independent library.
How do I send cookies with my axios request?
You can send cookies with your axios request by setting the "withCredentials" option to "true" in the config object of the request.
Is there a limit to the number of axios requests I can make?
There is no limit to the number of axios requests you can make, but it is recommended to limit the number of requests to avoid overloading the server.
Why is my axios request not working in Safari?
You may need to set the "credentials" option to "include" in your axios request to allow cookies to be sent. This is a known issue with Safari.
How do I intercept and modify my axios requests?
You can use interceptors in axios to intercept and modify requests and responses. Here's an example: https://github.com/axios/axios#interceptors.
Is there a way to automatically transform my data in axios requests?
You can use the "transformRequest" and "transformResponse" options in the config object to automatically transform your data before sending it to the server or after receiving a response.
Why is my axios request returning a "Cross-Site Request Forgery (CSRF)" error?
When making requests to a server that requires a CSRF token, you need to include the token in your axios request. Here's an example of how to do this: https://github.com/axios/axios#csurf.
Can I use axios to make requests to servers using the HTTPS protocol?
Yes, axios supports making requests to servers using the HTTPS protocol as long as the server's certificate is valid and properly configured.
