filter function index

by Akram kamal

HTML

<ul>
  <li><strong>list</strong> item 1 - one strong tag <strong>1</strong></li>
  <li><strong>list</strong> item <strong>2</strong> -two <span>strong tags</span></li>
  <li>list item 3</li>
  <li>list item 4</li>
  <li>list item 5</li>
  <li>list item 6</li>
</ul>

JavaScript

$( "li" )
  .filter(function( index ) {
    return $( "strong", this ).length === 2;
  })
    .css( "background-color", "red" );