<script src="http://www.ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js></script>
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<form>
<label>Campo</label>
<input id="campo" name="campo" placeholder="Campo" required="" type="text">
</form>
<script language="JavaScript" type="text/javascript">
$(document).ready(function() {
$.ajax({
url: "control.php",
type: "POST",
data: "campo=" + $("input#campo").val(),
success : function(data) {
if (data == 1) {
$("#div").html("Campo non disponibile");
}
else {
$("#div").html("Campo disponibile :)");
}
}
});
});
</script>
I saw with Firebug that the POST contains the value of the input field is sent only updating the page and not immediately. Why?
You don't have a proper click/submit handler registered for the form submission. Instead, you call $.ajax only on document ready. That's why you only see the submission on page load (or to be more accurate, document ready).
You need to listen to the submit event, so change your code to something like the following
$(document).on("submit", "form", function(e) {
e.preventDefault();
$.ajax({
…
});
});
You don't need to wait for the document to be ready if your javascript is at the end of the page (it's always ready at that point). And I noticed that you include both v1.9 and v.1.10 of jQuery and that's generally not needed nor advisable.
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