function shareInit() {

  const facebookBtn = document.querySelector(".facebook-btn");
  const linkedInBtn = document.querySelector(".linkedin-btn");
  const twitterBtn = document.querySelector(".twitter-btn");
  const emailBtn = document.querySelector(".email-btn");


  let postUrl = encodeURI(document.location.href);
  let postTitle = encodeURI("Check out this article by Zenhub");

  if (facebookBtn) { 
    facebookBtn.setAttribute(
      "href",
      `https://www.facebook.com/sharer.php?u=${postUrl}&`
    );
  }

  if (twitterBtn) {
    twitterBtn.setAttribute(
      "href",
      `https://twitter.com/share?url=${postUrl}&text=${postTitle}`
    );
  }

  if (linkedInBtn) { 
    linkedInBtn.setAttribute(
      "href",
      `https://www.linkedin.com/shareArticle?url=${postUrl}&title=${postTitle}`
    );
  }

  if (emailBtn) {
    emailBtn.setAttribute(
      "href",
      "mailto:" +
        `?subject=${postTitle}` +
        `&body=Hi there!\n Check out this article:${postUrl}`
    );
  }
}

shareInit();