数据不会从Ajax传输到PHP [关闭]

Question

I'm trying to pass data that comes from a prompt, but the PHP doesn't receive the data.

<script>
function test(){
  var  r=prompt("blaksasda");
  if(r){
    $.ajax({
        type: "POST",
        url: "file.php",
        data: {
                param:r,
            }
  });} };
</script>

PHP file:

<?php
echo "$_POST['param']";
?>

Answer 1

Are you sure PHP doesn't receive the data? Probably Ajax call works correctly. The problem is that you don't handle the echoed result. Try the following:

$.ajax({
  type: "POST",
  url: "file.php",
  data: {param: r}
}).done(function(result) {
  alert(result);
});