Tips for sharing JSON data between JavaScript files

Here is the initial script setup to utilize static .json files for displaying and animating specific content. The code provided is as follows:

     var self = this;
  $.getJSON('data/post_'+ index +'.json', function(d){
    self.postCache[index] = d;
    callback(d)

However, I am looking to adapt this script to retrieve data from a database instead. The data retrieved from the database is formatted similarly to the static json files. My query is regarding how to effectively integrate this database data into the existing script.

I have initiated an ajax request as shown below:

$(function () 
  {
    $.ajax({                                      
      url: 'api.php',                   
      data: "<?php echo $data?>",     
      dataType: 'json',                      
      success: function(data)          
      {
        //I am unsure what should be included here at this stage.
      } 
    });

  }); 

The api.php file retrieves data from the database and encodes it to json using json_encode.

Answer №1

let current = this;
$.post('api.php',
    {"post_id": identifier},     
    success: function(data)          
    {
        current.postCache[identifier] = data;
        response(data);
    });

check out http://api.jquery.com/jquery.post/

In api.php, execute a SQL query where the post_id matches $_POST['post_id'] then output json_encode($database_row);

Answer №2

$.getJSON is basically a shortcut for $.ajax with preset values. So, if the data remains constant, you can continue using it in the same way you were before.

  1. Maintain a reference to this
  2. Initiate your asynchronous call
  3. In the success function, preserve your reference and run your callback

    var self = this;
    $.ajax({
        url: 'api.php',
        data: "<?php echo $data?>",
        dataType: 'json',
        success: function(data)
        {
            self.postCache[index] = data;
            callback(data);
        }
    });
    

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