javascript function to count words and order by occurence

gist_javascript

//instructions: run in the console of your browser with index page open
var i,x,
dict = [],
uniqueDict = [],
txt = document.body.textContent.toLowerCase().replace(/[&\/\\#,+()$~%.'":*?<>{}(\d+)\[\]]|[\n$]/gmi,'').trim(),
txt2 = txt.split(' ');
 
txt2.forEach(function (element, index) {
   if(element.length>0){
       reg = new RegExp('\\b'+element+'\\b','gi');
       occur = (txt.split(reg).length - 1);
       // normal sort
       dict.push([element,occur]);
       dict.sort(function(a,b) {return b[1]-a[1]});
 
   }
});
//Objects in JavaScript are hashes
function eliminateDuplicates(arr) {
 var i,len=arr.length,out=[],obj={};
 for (i=0;i<len;i++) {
   obj[arr[i]]=0;
 }
 for (i in obj) {
   out.push(i);
 }
 return out;
}
 
uniqueDict = eliminateDuplicates(dict);
//console.log(uniqueDict);
console.log(document.body.innerHTML);
var output ='<ol>';
for (var a in uniqueDict){
 	output += '<li>';
   	output +=/*(parseInt(a)+1)+'. '+*/uniqueDict[a];
   	output +='</li>';
}
output +='</ol>';
document.getElementById('result').innerHTML=output;