gistfile1.js

function testaPost(){
    const url = '/includes/curl2.php'
    const data = {
        username: 'lubien',
        password: '123456',
        data: `<?xml version='1.0'?>
<methodCall>
    <methodName>RequestServer.GetTableState</methodName>
    <params>
        <param>
            <value><i4>112</i4></value>
        </param>
        <param>
            <value><i4>1649267442702</i4></value>
        </param>
    </params>
</methodCall>`
    }

    $.post(url, data)
    .done(console.log)
    .fail(console.error)
}