Return the first word with the greatest number of repeated letters

Question

This is a question from coderbyte’s easy set. Many people asked about it already, but I’m really curious about what’s wrong with my particular solution (I know it’s a pretty

Answer 1

I recommend use regular expression: /a+/g to find a list of letter with a key word a.

My example :

var str = aa yyyyy bb cccc cc dd bbb;

Fist, find a list of different word :

>>> ["a", "y", "b", "c", "d"]

Use regular expression for each word in list of different word :

var word = lstDiffWord[1];
             var
wordcount = str.match(new RegExp(word+'+','g')); 
console.log(wordcount);

>>>>["yyyyy"]

Here is full example: http://jsfiddle.net/sxro0sLq/4/