JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/themes/base/jquery-ui.css">
<a href="http://www.google.com" class="external">Google</a>

JavaScript

$( function()
{
    $( 'a.external' ).click( function( e )
    {
        if( window.confirm( 'This link is external. Are you sure you wish to continue?' ) )
        {
            window.open( $( this ).attr( 'href' ) );
        }
        e.preventDefault();
    } );
} );