Reddit API: Application only OAuth Basic Example using jQuery

reddit_api_example.js

//made with jQuery 3.1.1.
//attach this function to any HTML action and you'll get the response
//- Katamori, 10-25-2016

function Init(){

  clientID = //ID of the Reddit app you registered, as a string//;
  clientSec = //secret part of the same app;

  //Authorization to Reddit API
  $.ajax({
      type: 'POST',
      url: "https://www.reddit.com/api/v1/access_token",

      beforeSend: function(xhr) {
        xhr.setRequestHeader("Authorization", "Basic " + btoa(clientID + ":" + clientSec));
      },

      data:
        {
          grant_type: "client_credentials",
          user: clientID,
          password: clientSec
        },

      success: function(response) {

          //main connection itself - yes, another AJAX request if the previous one is successfull
          $.ajax({
              type: 'GET',
              url: "https://oauth.reddit.com/r/mealtimevideos/about", //full list of possible "cases": https://www.reddit.com/dev/api
              
              
              //this is the "critical" part: use the "access_token" you've got to get access
              beforeSend: function(xhr) {
                xhr.setRequestHeader("Authorization", response.token_type + " " + response.access_token);
              },

              success: function(data) { console.log(data); } //check your Dev Console ;)
          });

        }

  });

}