"use strict";

$(document).on("turbolinks:load", function() { //equivalent of $(document).ready()
  addSpace();
  var $grid = initMasonry();

  // layout Masonry after each image loads
  $grid.imagesLoaded().progress( function() {
    $grid.masonry('layout');
  });
});

function initMasonry() {
  return $('.masonry-grid').masonry({ //returns the jquery masonry grid to be stored as a variable
    // options
    itemSelector: '.card',
    // columnWidth: 280, //with no columnWidth set, will take size of first element in grid
    horizontalOrder: true,
    isFitWidth: true,  //breaks columns like media queries
    gutter: 20,
    transitionDuration: '0.3s'
  });
}

function addSpace() {
  var spaceBetween = $(".custom-footer").offset().top - $(".navbar").offset().top; //get space between header and footer
  var target = 600;

  if (spaceBetween < target) { //if space between header and footer < x
    var numOfSpaces = (target - spaceBetween) / 35;

    for(var i = 0; i < numOfSpaces; i++) {
      $("#main-container").append("<p>&nbsp</p>"); //add space above footer
    }
  }
}

"use strict";

$(document).on("turbolinks:load", function() { //equivalent of $(document).ready()
  console.log("JS loaded.")
  addSpace();
  var $grid = initMasonry();

  // layout Masonry after each image loads
  $grid.imagesLoaded().progress( function() {
    $grid.masonry('layout');
  });
});

function initMasonry() {
  return $('.masonry-grid').masonry({ //returns the jquery masonry grid to be stored as a variable
    // options
    itemSelector: '.card',
    // columnWidth: 280, //with no columnWidth set, will take size of first element in grid
    horizontalOrder: true,
    isFitWidth: true,  //breaks columns like media queries
    gutter: 20,
    transitionDuration: '0.3s'
  });
}

function addSpace() {
  var spaceBetween = $(".custom-footer").offset().top - $(".navbar").offset().top; //get space between header and footer
  var target = 600;

  if (spaceBetween < target) { //if space between header and footer < x
    var numOfSpaces = (target - spaceBetween) / 35;

    for(var i = 0; i < numOfSpaces; i++) {
      $("#main-container").append("<p>&nbsp</p>"); //add space above footer
    }
  }
}

Add JS console log line