Remove duplicate characters from string

Question

I have to make a function in JavaScript that removes all duplicated letters in a string. So far I\'ve been able to do this: If I have the word \"anaconda\" it shows me as a

Answer 1

This code worked for me on removing duplicate(repeated) characters from a string (even if its words separated by space)

Link: Working Sample JSFiddle

/* This assumes you have trim the string and checked if it empty */
function RemoveDuplicateChars(str) {
   var curr_index = 0;
   var curr_char;
   var strSplit;
   var found_first;
   while (curr_char != '') {
      curr_char = str.charAt(curr_index);
      /* Ignore spaces */
      if (curr_char == ' ') {
         curr_index++;
         continue;
      }
      strSplit = str.split('');
      found_first = false;
      for (var i=0;i str.length-1) return str;
    return str.substr(0,index) + chr + str.substr(index+1);
}