Utility functions for injecting into webpages to do scraping and fun things.

js_helpers_bookmarklet.js

// Use http://bookmarklets.org/maker/ with no jQuery (sometimes there are SSL problems)


window.q = document.querySelectorAll.bind(document);
window.qq = document.querySelector.bind(document);
NodeList.prototype.map = function(func, debug) {
  // A very useful function for reading and modifying a bunch of nodes on a web page.
  // example usage: q('a').map(node => node.getAttribute('href')) -> ['http://glench.com/', 'closed-source/dictionaryofnumbers/', ...]
  
  if (!func) { func = function(node) { return node;} }
  var nodes = this;
  var values = [];
  
  for (var i=0; i < nodes.length; ++i) {
    if (debug) {
      // add a node and value so better inspection can happen
      values.push([nodes[i], func(nodes[i])]);
    } else {
      values.push(func(nodes[i]));
    }
  }
  
  if (debug) {
    console.table(values);
  }
  return values;
}