Fetch not returning data

March 29, 2024

Javascript:

fetch("https://localhost/data.php", {
  method: "POST",
  body: JSON.stringify({
    data1: data1,
    data2: data2
  })
})
.then(res => res.json())
.then(json => function (json) {
  console.log("Successful fetch.");
  console.log(json);
})
.catch((error) => function (error) {
  console.log("Failed to fetch. " + error);
});

data.php:

<?php
echo '{
    "reply": true
}';
?>

I am trying to use a post request with fetch, but I cannot get a reply back from my PHP file, but I can access it from my browser.

>Solution :

The error is in this line .then(json => function (json) {. This code asking the then‘s callback function to return another function

fetch("https://localhost/data.php", {
    method: "POST",
    body: JSON.stringify({
      data1: data1,
      data2: data2
    })
  })
  .then(res => res.json())
  .then(json => {
    console.log("Successful fetch.");
    console.log(json);
  })