Instead of normally formatting the post with one indentations (four spaces):

var string = 'string';

In a list, it requires double indentations (eight spaces):

• List item:

   var string = 'string';
  

Normally, code blocks are formatted using four spaces of indentation:

var string = 'string';

• In a list, code blocks require eight spaces:

    var string = 'string';
  

• After a list, a code block can be made using four spaces of indentation, but it needs to be after an intervening <!-- comment -->.

var string = 'string';