Nesting quotes in JavaScript/HTML

You need to use proper escaping/encoding. Either in HTML using character references:

<p onclick="exampleFunc('&lt;div id=&quot;divId&quot;&gt;&lt;/div&gt;');">Some Text</p>

Or in JavaScript using string escape sequences:

<p onclick="exampleFunc('\x3Cdiv\x20id\x3D\x22divId\x22\x3E\x3C/div\x3E');">Some Text</p>