[Código-Javascript] Palabras más utilizadas en un Sitio Web

var script = document.createElement('script');
script.src = 'http://code.jquery.com/jquery-latest.js';
document.getElementsByTagName('head')[0].appendChild(script);

var times_form;
var element_form;
var length_form;
var l_temp;
var dict = {};
var new_dict = {};
var splited = "";
var counter;
var get_data = function (text, length) {
	
	splited = text.split(" ");	
	
  for ( var a in splited ) {

		if( dict[splited[a]] ) {
 			
      splited[a] = splited[a].toLowerCase();
 			dict[splited[a]] = dict[splited[a]] + 1;
    
		} else {
    	
      if ( splited[a].length >= length ) {
			
	      splited[a] = splited[a].toLowerCase();
        dict[splited[a]] = 1;
    
   		}
    
    }
  
	}
  
};

var extract = function (element, length, times) {
	
  new_dict = {};
  dict = {};
  
  $(element).each( function () {
  
	  get_data($(this).text(), length);
  
	});

  for ( var c in dict ) {
  	
    if ( dict[c] >= times ) {
	    
      new_dict[c] = dict[c];
    
    }
  
  }  
	
  var output = "<table border='1'>"+
      "<thead>"+
      "<th>Palabra</th>"+
      "<th>Longitud</th>"+
      "<th>Apariciones</th>"+
      "</thead>"+
      "<tbody>";
  counter = 0;
  for( var l in new_dict ) {
		
    counter++;
    l_temp = l.replace("<", "&lt;");
    l_temp = l_temp.replace(">", "&gt;");
    output = output + "<tr>"+
      "<td>" + l_temp + "</td><td>" + l.length + "</td><td>" + new_dict[l] + "</td>"+
      "</tr>";
    
  }
  output = output + "</tbody></table>";
  
  show_results(output);
  return new_dict;	

};

var find = function (word) { 

  if ( new_dict[word] ) {
  
  	show_results(String(new_dict[word]));
  
  } else {
  
  	show_results("Word Not found");
  
  }

};

var search = function () {

  length_form = $("input[name=length_craw]").val();
  times_form = $("input[name=times_craw]").val();
 	element_form = $("input[name=element_craw]").val();
  if( length_form.length > 0 && times_form.length > 0 && element_form.length > 0 ) {
  	
    extract(element_form, length_form, times_form);
  
  }

};

var show_form = function () {
	
  $("<div class='show_words' style='border-radius:5px;box-shadow:0px 0px 10px #000;overflow:scroll;font-family:Trebuchet MS;width:auto;height:6cm;background-color:#fff;border:1px solid;position:fixed;top:12%;left:2%;padding:5px;z-index:30;'>"+
    "<center><h2>Palabras más utilizadas</h2></center><input style='padding: 2px;border: 1px solid;border-radius: 4px;margin: 4px;' name='length_craw' placeholder='Longitud'>&nbsp;<input style='padding: 2px;border: 1px solid;border-radius: 4px;margin: 4px;' name='times_craw' placeholder='Veces'><br/>"+
    "<input style='padding: 2px;border: 1px solid;border-radius: 4px;margin: 4px;' name='element_craw' placeholder='Elemento'>&nbsp;<button onclick='search()' style='padding: 2px;border: 1px solid;border-radius: 4px;margin: 4px;'>¡Buscar!</button>&nbsp;<button onclick='$(\".show_words\").fadeOut();' style='padding: 2px;border: 1px solid;border-radius: 4px;margin: 4px;'>Cerrar</button>"+
    "<div class='words_content'></div></div>").appendTo("body");

};

var show_results = function (content) {

  $(".words_content").html("Total:" + counter + "<br/>" + content);

};

show_form();