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Solved: How do I fix Javascript Fetch API “SyntaxError: Unexpected end of JSON input”?

Problem / Question

I am new to the Javascript Fetch API and am attempting to post data and retrieve a result from my PHP page. However, I encountered an error message, “SyntaxError: Unexpected end of JSON input”. Could you please advise as to what may be causing this issue with my code?

Solved: How do I fix Javascript Fetch API "SyntaxError: Unexpected end of JSON input"?

Solution / Answer

It appears there is an issue with how the PHP script is processing the data sent via the POST request. The “SyntaxError: Unexpected end of JSON input” error message indicates that the server is returning something other than a valid JSON object. This is leading to an error when attempting to parse the response as JSON.

It is recommended to verify the functionality of the PHP script (ilcebilgileri.php) to guarantee proper management of the data sent through POST request. Confirm that the script provides a valid JSON object as response by running the script separately and observing the outcome.

It is suggested to use the browser’s developer tools console to investigate any other potential error messages or warnings that may be associated with this issue. This can be useful in the process of troubleshooting.

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