Simple script to run in the browser console at http://www.ascii.cl/htmlcodes.htm and obtain the ascii data by its type.

html-code-scrapper.js

// object that will contain the data
  var result = {
    dec: [],
    hex: [],
    symbols: [],
    htmlNums: [],
    htmlNames: [],
    names: []
  };

  // function to extract values from each <td>
  function extractDataFromTD(td) {

    // split the values on <br>
    var vals = td.innerHTML.split('<br>');

    // trim the excess whitespace unless
    // the actual data is a whitespace
    return vals.map(function(d) {
      return d === ' ' ? d : d.trim();
    });
  }

  function extractDataFromTDs(tds) {

    // first <td> is the decimal values
    var dec = extractDataFromTD(tds[0]);

    // second <td> is the hex values
    var hex = extractDataFromTD(tds[1]);

    // third <td> is the symbols
    var symbols = extractDataFromTD(tds[2]);

    // fourth <td> is the HTML numbers
    // innerHTML automatically converts special chars so
    // we have to convert them back
    var htmlNums = extractDataFromTD(tds[3]).map(function(num) {
      return num.replace('amp;', '');
    });

    // fifth <td> is the HTML name
    var htmlNames = extractDataFromTD(tds[4], false);

    // sixth <td> is the human readable name
    var names = extractDataFromTD(tds[5]);

    return {
      dec: dec,
      hex: hex,
      symbols: symbols,
      htmlNums: htmlNums,
      htmlNames: htmlNames,
      names: names
    };
  }

  // extract arrays of arrays containing <td>s with data
  var tdArrays = Array.prototype.map.call(document.querySelectorAll('tr.z1'), function(tr) {

    // each data row is the second sibling down from tr.z1
    var dataRow = tr.nextSibling.nextSibling;

    // filter out <td> arrays
    return Array.prototype.slice.call(dataRow.childNodes).filter(function(elem) {
      return elem.tagName === 'TD';
    });
  });

  // extract data for each array of <td>s
  var data = tdArrays.map(extractDataFromTDs);

  // join each type of data from all <td>s
  var dataTypes = Object.keys(result);
  data.forEach(function(d) {
    dataTypes.forEach(function(type) {
      result[type] = result[type].concat(d[type]);
    });
  });
  
  console.log(result);