Word Frequency Counter

Paste some text in the box below, and this script will count the number of unique words in your text, and sort them by frequency.

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Code:

function freqount()	{
  var allwords = new Array();
  var freqwords = new Array();
  var fqindex = 0;
  var textresult = "";
  allwords = document.getElementById("target").value.split(" ");
	
  while(allwords.length > 0){
    var thisword = allwords[0];
    var thiswordcount = 1;

    for(i=1; i<allwords.length; i++){
      if(allwords[i] == thisword){thiswordcount++;}
    }
    allwords = purge(thisword, allwords);
    freqwords[fqindex] = new Array(thiswordcount, thisword);
    fqindex++;	
  }
	
  freqwords = sort(freqwords);

  textresult = "<table cellpadding=3 cellspacing=0>";

  for(i=0; i<freqwords.length; i++){
    textresult += "<tr><td>" + freqwords[i][0] + "</td><td>" + freqwords[i][1] + "</td></tr>";
  }
  textresult += "</table>"

  document.getElementById("result").innerHTML = textresult;
}

function sort(sarray){
  var returnarray = new Array();
  var highnum = 0;
  var raindex = 0;
	
  for(j=0; j<sarray.length; j++){
    if(sarray[j][0] > highnum){ highnum = sarray[j][0]; }
  }	

  for(n=highnum; n>=0; n--){
    for(m=0; m<sarray.length; m++){
      if(sarray[m][0] == n){
        returnarray[raindex] = sarray[m];
        raindex++;
      }
    }
  }
		
  return returnarray;	

}


function purge(pword, wordarray){

  var returnarray = new Array();
  var raindex = 0;

  for(k=0; k<wordarray.length; k++){
    if(wordarray[k] != pword){
      returnarray[raindex] = wordarray[k];
      raindex++;
    }
  }

  return returnarray;
}

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