Insert PHP code in JQuery - php

Question

Good day every one. I want to insert my php code in my jquery. I want to show my data in database using PHP and I want to put it in a option box. I used var in jquery plus the code of my php but isn't working. Please help me.
Shows the data:
<?php
$res2 = mysql_query("SELECT * FROM expense_maintenance ORDER BY name Asc");
while ($result2 = mysql_fetch_assoc($res)){
$name = $result2["name"];
?>
jquery code(dynamic adding text box)
var nitem =0;
var ntotal = 0;
var option = <?php echo" <option value='$name'>$name</option>";} ?>;
function totalItemExpence(){
ntotal = 0;
$('.expense_cost').each(function(){
if($(this).val() != ""){
ntotal += parseFloat($(this).val());
}
});
//$('#total').val(ntotal);
}
$(document).on('change keyup paste', '.expense_cost', function() {
totalItemExpence();
mytotal();
});
$('.btn').click(function() {
nitem++;
$('#wrapper').append('<div id="div' + nitem + '" class="inputwrap">' +
'<select class="expense_name" id="' + nitem '">"'+ option +'"</select>' +
'<input class="expense_desc" placeholder="Expense Description" id="' + nitem + '" required/>' +
'<input class="expense_cost" onkeypress="return isNumber(event)" placeholder="Expense Cost" id="' + nitem + '" required/> ' +
'<br><br></div>');
});
$('.btn2').click(function() {
ntotal = $('#total').val();
$("#div" + nitem + " .expense_cost").each(function(){
if($(this).val() != ""){
ntotal -= parseFloat($(this).val());
}
});
$("#div" + nitem ).remove();
nitem--;
$('#total').val(ntotal); });

Answer 1

Try this for while loop :
<?php
$res2 = mysql_query("SELECT * FROM expense_maintenance ORDER BY name Asc");
$options = '';
while ($result2 = mysql_fetch_assoc($res)){
$options .= "<option value='{$result2["name"]}'>{$result2["name"]}</option>";
}
?>
And JS part :
...
var option = "<?php echo $options; ?>";
...

Answer 2

This line:
var option = "<?php echo "<option value='$name'>$name</option>"; ?>";
must be in your .php file, because php code won't be executed in a .js file (that's why it's called .php)...
You can wrap that line in a <style> tag in your .php file
Also, don't forget to add these things --> "
And to remove this one --> }