callback

callback.js

class Geocoding {
  search(query, callback) {
    // dosomething and take data
    // data = 1
    //
    // let data = 1
    //return data
    //

    jQuery.ajax('a.json', function(data) {
      callback(data)
    })
    //callback(data)
  }
}

// search_ui.js
//
let callback = function(data) {
  // do something
  $('text').text(data.lot)
}

let callback1 = function(data) {
  // do something
  $('text-1').text(data.lot)
}

let a = new Geocoding()
a.search(query, callback)
a.search(query, callback1)



function a(callback) {
  console.log('a')
  callback()
}

function b(callback) {
  console.log('b')
  callback()
}

function c(callback) {
  console.log('c')
  callback()
}

c(function() { a(b) })


//let x = function() { 
  //a(b)
//}

//c(x)