javascript - Ajax post to php serverside code -


this home work , given ajax javascript code need modify. having trouble figuring out syntax of of code.

here provided code , suppose write php serverside code

function submit_login() {     if( document.form.loggedin.checked ) return     request = new xmlhttprequest()     request.onreadystatechange = respond_login     request.open("post", "ajaxcontroller.php", true /* asynchronous? */ )     request.send( "action=login&password=" + postescape( document.form.pwd.value ) +                     "&username=" + postescape( document.form.user.value ))     document.form.pwd.value = ""     document.form.user.value = "" }

i confused on how write server side part post. write this:

$action = $_post['"action=login&password="];

however confused how write above line since 2 variable passed through send. think need parse still find line confusing whats happening.

at server side fetch values 3 statements:

$action = $_post['action']; $username = $_post['username']; $password = $_post['password'];

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