jQuery $ .post无法处理特定条件

Question

I'm trying to insert some data into mySQL database using AJAX and jQuery $.post. My attempt to test the functionality is as follows

index.html: code fragment (already using jQuery for many other functions)

$.post( 
    "updateDatabase.php",
    { name: "Zara" },
    function(data) {
         //$('#stage').html(data);
         alert('Success');
    }
);

updateDatabase.php

<?php
if( $_REQUEST["name"] ) {

   $name = $_REQUEST['name'];
   echo "Welcome ". $name;
   echo "<script>alert('Im here')</script>";
}
?>

What I'm getting is an alert with "Success" and nothing else(It is the callback function of $.post). I already researched a lot and found some similar but different questions. However my problem left unsolved because there is no satisfactory solution for this particular issue.

Answer 1

You are echoing a string echo "alert('Im here')";. so,

1. It can't be treated as a javascript function.
2. You are not using the response in the success callback.

---

What you can do is:

function(data) {
     alert('Success: '+data);
     // outputs: Success: Welcome Zara I'm here
}

and at php:

echo "Welcome ". $name . " I'm here";