JSFiddle - React, Tailwind, and code Playground

HTML

<a href="mailto:[email protected]?subject=Subject includes \"double-quotes\"">Mail link</a>

JavaScript

//encodeURIComponent("mailto:[email protected]?subject=Subject includes \"double-quotes\"")

  $(document).ready(function(){
    $('#MyButton').click(function(){
      alert('hi');
    });
  });