In JavaScript, the **`fetch()` method** is used to make asynchronous requests to the server and load the information that is returned by the server onto the web pages.

# 
#  Syntax
```
fetch(URL, options);
```
## Parameters
The `fetch()` method accepts the following two parameters.
* `URL`: The URL on which the request is to be made.
* `Options`: An object which consists of additional properties that can be sent to the server. It is optional.



##  
## Return value
The `fetch()` method returns a promise that can either be resolved or not. Thus, this method always returns a value and the only possible case where it may fail to return anything is a server error.



## Code 
Let's make some requests to a public URL and see how fetch works in detail.

fetch('https://reqres.in/api/products')
  .then(res => res.json())
  .then(data => console.log(data))
  .error(e => console.error(e))

codemirror

console

The fetch method works in a chain of multiple `then()` methods and one `error()` method. The `error()` method will only be called if any error occurs while the request is made. 

The format of returned data can be JSON or XML. Here, we have explicitly converted the returned data to JSON format using `json(`) method and logged it into the console. Thus, we can get any data we want from the server via `fetch()`. 

The default method of `fetch()` is GET. If needed, we can also make a POST, PUT and DELETE method request as well. Below is an example of `fetch()` using the POST method.

const options =  {
    method: 'POST',
    headers: {
        'Content-Type': 'application/json;'
    },
    body: JSON.stringify({
      'productName': 'XYZ',
      'price': 200
    })
}

fetch('https://reqres.in/api/products', options)
  .then(res => res.json())
  .then(data => console.log(data))
  .error(e => console.error(e))

What is fetch() in JavaScript?

In JavaScript, the fetch() method is used to make asynchronous requests to the server and load the information that is returned by the server onto the web pages.  Syntax fetch(URL, options);  Parameters The fetch() method accepts the following two parameters.  URL: The URL on which the request is to be made. Options: An object which consists of additional properties that can be sent to the server. It is optional.   Return value The fetch() method returns a promise that can either be resolved or not. Thus, this method always returns a value and the only possible case where it may fail to return anything is a server error. Code Let s make some requests to a public URL and see how fetch works in detail. 