How to replace the 3rd character and multiple of 3 's character in a string with a \n in javascript

Question

I have a string like 'oeew9w79WMIGL'. I want to get an output like below,

oee
w9w
79W
MIG
L

How to do it with plain JavaScript?

Answer 1

You could replace a part of the string.

var string = 'oeew9w79WMIGL';

console.log(string.replace(/.../g, '$&\n'));

Answer 2

if you use regex

let str = 'oeew9w79WMIGL';

document.write(str.match(/.{1,3}/g));
   

Answer 3

$(document).ready(function(){
 var foo = "oeew9w79WMIGL";
$('#test').html(foo.match(/.{1,3}/g).join("<br />") );
 });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<span id="test">
</span>

 var str= "oeew9w79WMIGL";
console.log( str.match(/.{1,3}/g).join("<br />") );

Answer 4

 each_slice = function(enm, slice_size) {
   var results = [];
     slice_size = (slice_size < 1 ? 1 : slice_size ); 
       for (var i=0; i<=enm.length; i=i+3) {
         results.push(enm.slice(i, i+3));
      }
  return results;
}

var x = "oeew9w79WMIGL";
each_slice(x,3).join("\n")

//oee
//w9w
//79W
//MIG
//L

for reference: https://stackoverflow.com/a/41219012/4481312