Wordpress AJAX：获取Json响应的功能

Question

I'd like to get a function as Json response in my Ajax call, after the document is ready. I'm not sure if I'm on the right way but here is what I did so far:

My Html

<!--Where i want to load my function-->
<div id="applications"></div>

My Ajax/Jquery

jQuery(document).ready(function(){
    init_applications();
});
function init_applications(){
    var app_data = new FormData();
    app_data.append('action', 'applications');
    app_data.append('uid', uid);
    app_data.append('pid', pid);
    jQuery.ajax({
        method: 'post',
        url: ajaxurl,
        dataType: 'json',
        data: app_data,
        processData: false,
        contentType: false,
        beforeSend:function(data){
            //something
        },
        success:function(data) {
            $('#applications').html(data.htmlapp);
            //console.log(data);
        },
        error: function(data){
            //console.log(data);
        }
    });
    //alert("a");
}

Of course in my functions.php

add_action('wp_ajax_applications', 'applications');
function applications(){
    $uid = $_POST['uid'];
    $pid = $_POST['pid'];
    $applications = inside_applications();
    $response = array('htmlapp'=>$applications);
    wp_send_json( $response );
}

and Finally I've created my separate function always in functions.php

function inside_applications(){
   //Some html code and instructions
}

Is this possible or I'm totally out of the way? Can you please give me some directions eventually? Many thanks.

Answer 1

All the previous reasoning was fine, it's just matter to return values or html in the function you want include. In my case was.

function inside_applications(){
   //Some html code and instructions
   $html = '<div class="something>everything</div>';
   $html .= '<div class="solved">solved</div>';
   //Insert some if or instructions
   return $html;
}

As discussed in comments wp_send_json() hook already print() and die() so it's not necessary to do anything more. Maybe there are other better methods to accomplish that but my objective was to Ajaxify a Wordpress theme and to have separate multiple functions refreshable and ready for my jQuery calls and actions.