Submit autocomplete with enter button without refreshing the page - php

Question

I am trying to get the query results by hitting the enter button on the drop down of the autocomplete results. It works fine if I use the mouse to click the result i want but wont work if i use the enter key.
The first function gets the autocomplete results and the second submits the result to get the data from that particular id.
JQUERY
$(document).ready(function () {
$("#equipment").autocomplete({
source: "search.php",
minLength: 2,
select: function(event, ui) {
$('#eq_id').val(ui.item.id);
}
});
$(document).off("keypress", "#equipment");
$(document).on("keypress", "#equipment", function(event) {
//if (!e) e = window.event;
if (event.keyCode == '13'){
$('#loading').show();
var eq_id = $("#eq_id").val();
var dataString = 'eq_id=' + eq_id;
$.ajax({
type: "POST",
url: "updateForm.php",
data: dataString,
success: function(html){
$("#formAddEquip").hide();
$("#showuserresult").show();
$("#showuserresult").html(html);
$("#equipment").val("");
$('#loading').hide();
}
});
return false;
}
});
});
And here is the form
<form action="" method="post" id="#somesearch">
<label for="equipment" id="eq_id_label">Search Equipment</label>
<input type="text" id="equipment" name="equipment" />
<input type="hidden" id="eq_id" name="eq_id" />
</form>

Answer 1

Start with these improvements
$(function() { // only one "load"
$("#equipment").autocomplete({
source: "search.php",
minLength: 2,
select: function(event, ui) {
$('#eq_id').val(ui.item.id);
}
});
$("#somesearch ").on("submit", function(e) {
e.preventDefault(); // stop submission
});
$(document).on("keypress", "#equipment", function(event) {
//if (!e) e = window.event;
if (event.keyCode == '13') {
$('#loading').show();
var eq_id = $("#eq_id").val();
var dataString = 'eq_id=' + eq_id;
$.ajax({
type: "POST",
url: "updateForm.php",
data: dataString,
success: function(html) {
$("#formAddEquip").hide();
$("#showuserresult").show();
$("#showuserresult").html(html);
$("#equipment").val("");
$('#loading').hide();
}
});
}
});
});