for(var i = 0; i < smiles.length; i++) {
        var posts = document.querySelectorAll('.post-content'); // Here are I collect all posts on the forum's page
        for(var k =0; k < posts.length; k++) {
          var regex = new RegExp(smiles[i], 'gi');
          posts[k].innerHTML = posts[k].innerHTML.replace(regex, `<span class="smile">${smiles[i]}</span>`);
        }
      }