leetCode387wrong.js

var firstUniqChar = function(s) {
    var ary = s.split('');
    var counter = {};
    for(var i = 0; i< ary.length; i++){
        if(!(ary[i] in counter)){
            counter[ary[i]] = 1;
        }else{
            counter[ary[i]] += 1;
        }
    }
  console.log(counter);
  Object.keys(counter).map(function(key,index){
        if(counter[key] === 1){
          return key;
        }else{
           return -1;
        }
    })
  for(var j = 0 ; j < counter.lenght ; j++){
    console.log(counter[j]);
  }
};
var a = firstUniqChar("leetcode");
console.log(a);