使用Ajax提交表单而不刷新页面

Question

i have old code, that has jquery v1.9. now for some new edit, i need to submit form without refreshing page using ajax. but it dose not work. and when i change version of jquery, old script dose not work. my code is here: days.php:

<script>
$(document).ready(function(){
$('#formSubmit').click(function(){
$.post("day2.php",
{name: $('#name').val()},
    function(data){
    $('#response').html(data);}         
);});});
</script>   
<div>
<input type="text" id="name">
<button id="formSubmit">send</button>
<textarea id="response"></textarea>
</div>

and day2.php:

$name = $_POST['name'];
echo "response: " +$name;  

i dont know where is problem!

Answer 1

try:

echo "response: " . $name;

instead of:

echo "response: " +$name;  

Answer 2

Actual problem is in second file where in

echo "response: " +$name;

you have used + as string concatenation operator instead of '.'

so actual code is like this

echo "response: " .$name;