If you want to use whatsapp web then you can use this code
<a href="https://web.whatsapp.com/send?text=www.google.com" data-text="Take a look at this awesome website:" class="wa_btn wa_btn_s" style="display:none">Share1</a>
If its for mobile whatsapp
<a href="whatsapp://send?text=www.google.com" data-text="Take a look at this awesome website:" class="wa_btn wa_btn_s" style="display:none">Share1</a>
Social Plugin