Ajax请求始终失败

Question

I'm trying to send variables of username and password to a PHP file from a JS file, but the ajax request always fails (prints fail), no idea why.

JS file:

<script>
    var imported = document.createElement('script');
    imported.src = 'http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js';
    document.querySelector('head').appendChild(imported);

    function collect() {
        var user = "joe";
        var pass = "123";
        $.ajax({
            type:'POST',
            url: 'myphp.php',
            data: {'username': user, 'password': pass},
            success: function(){
                alert("success!");
            },
            error: function(){
                alert("fail");
            }
        });
    }
</script>

PHP file:

<?php
$myval = $_POST['username'];
echo($myval);
?>

Answer 1

<script>
    var imported = document.createElement('script');
    imported.src = 'http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js';
    document.querySelector('head').appendChild(imported);

    function collect() {
        var user = "joe";
        var pass = "123";
        $.ajax({
            type:'POST',
            url: 'myphp.php',
            data: {'username': user, 'password': pass},
            success: function(){
                alert("success!");
            },
            error: function(){
                alert("fail");
            }
        });
    }
</script>


PHP file:

<?php
$myval = $_POST['username'];
echo($myval);
?>

When posting with ajax you don't need EQUAL (=), that's the problem you're having.