DOM Selector WebPipe Block

gistfile1.js

var jsdom = require('jsdom');
var fs = require('fs');
var jquery = fs.readFileSync("./jquery.min.js").toString();
var Block = require('node-webpipe').Block;

var block = new Block()
  .name("DOM Selector")
  .description("Outputs selected content from a HTML DOM.")
  .input("url", "string", "The location of the document to inspect.")
  .input("selector", "string", "A jQuery-compatible DOM selector.")
  .input("attribute", "string", "A HTML element attribute.")
  .output("content", "string", "The selected content from the document.")
	
block.handle(function(inputs, callback) {
  getContent(inputs, function (content) {
    callback(false, { 
			content: content 
		});
  });
});

block.listen();

var getContent = function (inputs, callback) {
  jsdom.env({
    html: inputs.url,
    src: [jquery],
    done: function (errors, window) {
      var $ = window.$;
      var $element = null;

      if (errors) {
        callback("");
      }

      $element = $(inputs.selector)

      if (inputs.attribute) {
        callback($element.attr(inputs.attribute));
      } else {
        callback($element.html())
      }
    }
  });
};