Puts links in the format "-hyperlinked_title (source)" and outputs HTML source

LinkFormatter.js

var title = "empty";
var url = "empty";
var source = "";
var i = 0;
var j = 0;

var webData = {};
var sources = [];

var finalData = "";

while(title !== ""){
    title = prompt("Enter title");
    url = prompt("Enter URL");
    source = prompt("Enter source");

    webData[title] = url;
    sources[i] = source;
    i++;
}

for(var i in webData){
    if((webData[i]) === ""){
        delete webData[i];
    }
}

var dataLength = Object.keys(webData).length;

for(var i in webData){
  if(sources[j] !== undefined && sources[j] !== ""){
    if(webData[i] === webData[dataLength - 2] && j === dataLength - 2){
      finalData += ("-<a href=\"" + webData[i] + "\">" + i + "</a> (" + sources[j] + ")");
    }else{
      finalData += ("-<a href=\"" + webData[i] + "\">" + i + "</a> (" + sources[j] + ")\n");
    }
  }
  j++;
}

console.log(finalData);