Question

I need a help with the below-given function. The function mainApp.php returns 1, but Else part of the success IF statement is executed. I have doubts regarding the correctness of an expressionfunction(html,msg). How to solve this problem?

UPDATE (Working code):

function click_function_ps() {
    $.ajax({
        url: 'callpage.php?page=optim/mainApp.php',
        data: 'myParam='+$('#myParam').val(),
        dataType: 'json',
        success: function(output){
            if(output.msg === 1){
                $('#myContainer').html(output.html);
            } else {
                $dialog.dialog('open');
                return false;
            }
        }
    });
}

mainApp.php

 $html_code = '<table width="100%">
                <tr>
                    <td width="100%">
                        <div class="scrollbar" id="chart"><img class="displayed" src="ganttchart.php"></div>
                    </td>
                </tr>
            </table>';

            echo json_encode(array('msg' => 1, 'html' => $html_code));

Answer 1

The response returned is in the first argument. The second one is usually not interesting.

success(data, textStatus, jqXHR)

A function to be called if the request succeeds. The function gets passed three arguments: The data returned from the server, formatted according to the dataType parameter; a string describing the status; and the jqXHR object.

I’d also suggest you to rename html to something more meaningful such as data or response and add dataType: 'json' to your ajax arguments. Then make your PHP script return json_encode(array('msg' => 1, 'html' => $your_html_code)) and use data.msg and data.html in your function.