Pass an array by ajax to php page - php

Question

I need to pass an array to a php page with AJAX. This array of input elements gets sent to the other page:
<input type="text" name="txtCoursesNamewith[]" id="txtCoursesNamewith" size="117" >
This is how I prepare it for sending:
var txtCoursesNamewith = $.serialize($('#txtCoursesNamewith').val());
But I get this error when running the script:
TypeError: $.serialize is not a function
How can I send an array with AJAX?

Answer 1

I am facing same problem and, i am just using code like this.
but first of all please insert one hidden field and set textbox id like this:
<input type="hidden" name="txt_count" id="txt_count" value="3" />
<input type="text" name="txtCoursesNamewith[]" id="txtCoursesNamewith1" size="117" >
<input type="text" name="txtCoursesNamewith[]" id="txtCoursesNamewith2" size="117" >
<input type="text" name="txtCoursesNamewith[]" id="txtCoursesNamewith3" size="117" >
<script type="text/javascript">
var txt_count= $('#txt_count').val();
for (i=1; i<=txt_count; i++){
queryString += "&txtCoursesNamewith%5B%5D=" + $('#txtCoursesNamewith'+i).val();
}
</script>
finally we can pass queryString variable to ajax, and you can print array.
<?php
echo "<pre>";
print_r($_GET); // or print_r($_POST);
?>

Answer 2

var textBoxes;
$('input[name="txtCoursesNamewith[]"]').each(function() {
textBoxes+=$(this).val()+"|||";
});
Now the textBoxes have all the values of text field with ||| separated and pass to php script and use explode() function to split each input value . may it helps u

Answer 3

You don't need to use .val() because .serialize() works on a the field itself, not on the value. (because it needs to get the name and the value from the field)
You can also call serialize() directly on a jQuery object, rather than using the jquery object as a parameter. Do it like this:
var txtCoursesNamewith = $('#txtCoursesNamewith').serialize();
Hope that helps.

Answer 4

Because $.serialize($('#txtCoursesNamewith').val()) is a string and not a jQuery object, it doesn't have the serialize function.
If you want to serialize the input (with its value), use $('#txtCoursesNamewith').serialize();
$.ajax({
type: 'POST',
url: your url,
data: $('#'+form_id).serialize(),
success: function(data) {
$('#debug').html(data);
}
});
Then in php
<?php
print_r($_POST);
?>