Function to get array of child nodes that are visible in browser

getVisibleNodes.js

function getVisibleChildNodes(input) {

  if (!input instanceof Node) {
    return false;
  } else {
    const filteredNodes =
      // Create array from child nodes
      Array.from(input.childNodes)

      // Remove comments
      .filter(function(node){
        if (node.nodeName != '#comment') {return node;}
      })

      // Remove nodes that are only whitespace
      .filter(function(node){
        if (node.nodeName != '#text'){
          return node;
        } else if (node.wholeText.replace(/\s*/g,"") != "") {
          return node;
        }
      });

    return filteredNodes;
  }
}