How can I send a response in Ajax through php script - php

Question

I need to send a response from the ajax to the php code. Alert msg as to be displayed when success.. I have to get entered date should be displayed in the url and response as to be sent..
<script>
$(document).ready(function() {
$('#txtdate').change(function(){
date = $(this).val();
$.ajax({
type: 'GET',
url: "http://localhost/data/check_date.php?date=" +date ,
success: function() {
alert(data);
}
});
});
});
</script>

Answer 1

Two error:
1:
date = $(this).val();
to
var date = $(this).val();
2:
url: "http://localhost/data/check_date.php?date=" +date ",
to
url: "http://localhost/data/check_date.php?date=" +date ,
3:
success: function() {
to
success: function(data) {
All script:
<script>
$(document).ready(function() {
$('#txtdate').change(function(){
var date = $(this).val();
$.ajax({
type: 'GET',
url: "http://localhost/data/check_date.php?date=" +date ,
success: function(data) {
alert(data);
}
});
});
});
</script>

Answer 2

Remove " mentioned at the end of the url because date is variable to be passed through url.
To overcome all mistakes change your whole code to
<script>
$(document).ready(function() {
$('#txtdate').change(function(){
var date = $(this).val();
$.ajax({
type: 'GET',
url: "http://localhost/data/check_date.php?date=" +date,
success: function(date) {
alert(date);
}
});
});
});
</script>

Answer 3

var date = $(this).val();
$.ajax({
type: 'GET',
url: "http://localhost/data/check_date.php?date=" +date ,
dataType: 'text',
success: function(data) { //add data in the function which is returned from the file
alert(data);
}
});
also try opening your network tab by clicking F12 in your browser before doing ajax request, if there's some error in your php file you can view it here in network tab, see if it helps