Insert Whatsapp Share button in HTML pages [closed]

You can use the URL scheme whatsapp://send?text= in the href attribute of a hyperlink followed by the message that will be shared. For example:

<a href='whatsapp://send?text=StackOverflow'>compartilhar</a>

If the user has the application installed, it will be initialized allowing a contact to be chosen next to a text field that allows editing the message before sending.

Because the browser is still not able to access WhatsApp the way it is done on mobile devices - this URL scheme is unknown - it may be interesting to hide that link and display it only on smaller screens:

/**
 * Tamanho somente para ilustrar! Tenha em mente que
 * a instalação do aplicativo não é restrita a smartphones.
 */
@media screen and (min-width: 860px){
  .compartilhar-whatsapp {
    display: none;
  }
}

Some links in frequently asked questions about the application that cites the use of this custom url schema:

• FAQ Iphone
• Android FAQ