nth_child vs. nth-of-type

by juErik

HTML

<h1>This is a heading in body</h1>
<p>The first paragraph in body.</p>
<p>The second paragraph in body.</p>

<div style="border:1px solid;">
<span>This is a span element in div</span>
<p>The first paragraph in div.</p>
<p>The second paragraph in div.</p>
<p>The third paragraph in div.</p>
<p>The last paragraph in div.</p>
<span>This is a span element in div</span>
</div><br>

<div style="border:1px solid;">
<p>The first paragraph in another div.</p>
<p>The second paragraph in another div.</p>
<p>The last paragraph in another div.</p>
</div>

<p>The last paragraph in body.</p>

<button>:nth-child(2)</button>
<button>:nth-last-child(2)</button>
<button>:nth-of-type(2)</button>
<button>:nth-last-of-type(2)</button>

JavaScript

$(document).ready(function(){
  $("button").click(function(){
    var btn = $(this).text();
    $("p").css("background-color","white"); 
    $("p" + btn).css("background-color","yellow");  
  });
});