app/assets/javascripts/likes.js
var ready = function() {
$('.likes-link').on('click', function(event){
event.preventDefault();
var likeCount = $(this).siblings('.like_count');
$.post(this.href, function(response){
likeCount.text(response.new_like_count);
})
})
};
$(document).ready(ready);
$(document).on('page:load', ready);