Padding based on size of string?

You can rely on some CSS and counter to easily achieve this:

let people = ['foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo'];
var htmlString = "";
for (var i = 0; i < people.length; i++) {
  htmlString += `<span>${people[i]}</span>`;
}
$('#foos').html(htmlString);
#foos {
  counter-reset:num;
}
#foos span {
  display:block;
  margin-left:20px; /*adjust this*/
  position:relative;
}
#foos span:before {
  content:counter(num)'.';
  counter-increment:num;
  position:absolute;
  right:100%;
  margin-right:3px; /*adjust this*/
}
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js" 
    type="text/javascript" charset="utf-8"></script>

<div id="foos"></div>

If the number can increase a lot you can try the following where the width of the number area will adjust based on the maximum number:

let people = ['foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo','foo', 'a', 'foo', 'foo bar', 'foo', 'f', 'foo', 'foo', 'foo', 'foo', 'foo', 'foo'];
var htmlString = "";
for (var i = 0; i < people.length; i++) {
  htmlString += `<span>${people[i]}</span>`;
}
$('#foos').html(htmlString);
#foos {
  counter-reset:num;
}
#foos span {
  display:table-row;
}
#foos span:before {
  content:counter(num)'.';
  counter-increment:num;
  display:table-cell;
  text-align:right;
  padding-right:5px;
}
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js" 
    type="text/javascript" charset="utf-8"></script>

<div id="foos"></div>

Tags:

Javascript

Html

Css

String

Padding

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