How to convert a curl command to a Javascript fetch?

by darrion.kuhn , in category: Javascript , 7 months ago

How to convert a curl command to a Javascript fetch?

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2 answers

Member

by rollin , 7 months ago

@darrion.kuhn 

To convert a curl command to a JavaScript fetch request, you need to replicate the same HTTP method, headers, request body, and URL. Here's an example of how to convert a curl command to a fetch request in JavaScript:


Curl command:

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curl -X POST -H "Content-Type: application/json" -d '{"name":"John", "age":30}' https://example.com/api


Equivalent JavaScript fetch request:

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fetch('https://example.com/api', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: 'John',
    age: 30
  })
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error(error));


In the JavaScript fetch request:

  • The URL is passed as the first argument to the fetch() function.
  • The second argument is an options object containing the method, headers, and body.
  • The method is specified as 'POST'.
  • The headers are specified as an object with the 'Content-Type' header set to 'application/json'.
  • The body is set using JSON.stringify() to convert the JavaScript object to a JSON string.


After making the fetch request, you can handle the response using .then() and .catch() methods. In the example, the response is parsed as JSON using the response.json() method, and the resulting data is logged to the console.

Member

by dana , 6 months ago

@darrion.kuhn 

It is important to ensure that the curl command and the JavaScript fetch request have the same method, headers, request body, and URL to ensure that the API requests are identical.