简单的Ajax PHP提交表单

Question

How do you use ajax to submit form contents to a txt file.

<input id="form" placeholder="fill out this" type="text">
<button>Submit</button>

ajax

<script>

$('button').click(function (){
var food = $('#form').val();
 $.ajax({
            url:'form.php',
            type:'POST',
            data: food,


        });
});

</script>

form.php

<?php
    error_reporting(E_ALL);
    $data = $_POST['food'];
    $f = fopen('filehere.txt', 'w+');
    fwrite($f, $data);
    fclose($f);
?>

the txt file keeps coming up blank

Answer 1

AJAX call with wrong type, you have to send an object.

$.ajax({
    url:'test.php',
    type:'POST',
    data: {food: food}
});