null created by smakar20 - https://repl.it/KtzF/0

KtzF-0.js

//determine if a string has all unique characters.
(function isUnique(str){
  var charMap ={}
  var ignoreCaseStr = str.toLowerCase()
  for(var i=0; i< ignoreCaseStr.length;i++){
    if(charMap[ignoreCaseStr[i]] == undefined){
      charMap[ignoreCaseStr[i]] = ignoreCaseStr[i]
    }
    else{
      return false
    }
  }
  return true
}('sohIni'))