Retrieve value from php file using jquery

Question

I am just messing around with some php and jquery. My test site has the user enter in numbers in a form and then when they click submit the information is sent to that php file, does some calculations and then prints the result in a <div> that I specify without reloading the page. I just want to know is there any way to retrieve that value that the php file returns in a jquery variable?

CODE:

$(document).ready(function(){
    $("#results").hide();
    $("#myform").validate({
        debug: false,
        rules: {

        },
        messages: {

        },
        submitHandler: function(form) {
            // do other stuff for a valid form
            $.post('process.php', $("#myform").serialize(), function(data) {
                $('#results').show();
                $('#results').html(data) ;


            });

        }
    });

Yes, all you need to do is to return response in JSON for better integration with JavaScript — Nazariy
– Nazariy, Commented Jan 14, 2013 at 0:51

PassKit · Accepted Answer · 2013-01-14 01:12:52Z

Your PHP value is already being retuned as data.

To use it outside of your handler, assign it to a global variable.

var phpData = '';

$(document).ready(function(){
    $("#results").hide();
    $("#myform").validate({
        debug: false,
        rules: {

        },
        messages: {

        },
        submitHandler: function(form) {
            // do other stuff for a valid form
            $.post('process.php', $("#myform").serialize(), function(data) {
                $('#results').html(data).show(); // you can chain for efficiency
                phpData = data;
            });

        }
    });
});

For more functionality, you can send the data from PHP as a JSON object.

$data = array('success' => true,
              'message' => 'Your message',
              'otherNum' => 25);

echo json_encode($data);

Then in your Javascript you can access it as follows.

data.success = true
data.message = 'Your message'
data.otherNum = 25

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