Bullock_xaringan.js

<script>
  // The <script> tags are necessary when being source by xaringan.
  // [2020 10 10].
  
  
  // window.onload = function () {


  /* Scroll to top of presenter notes when moving to a new slide. See
     https://github.com/gnab/remark/wiki/Configuration#api for more.
     [2021 03 27] */
  function scrollNotesToTop() {
		presenterNotes = document.querySelector(".remark-notes")
    presenterNotes.scrollTo(0,0)  
  }
  slideshow.on('showSlide', scrollNotesToTop);



  /* Reduce gap between a paragraph and the following code block. */
  myPre = document.querySelectorAll("p + pre");
  for (const pre of myPre) { pre.previousElementSibling.style.marginBottom = "0.2em" };


  /* Adjust list numbering. It may be possible to do this more 
     elegantly with a remark.js macro, such that I don't need a 
     different pair of JS commands for each new start number. See 
     https://slides.yihui.org/xaringan/#33. See also the "startnum" pandoc 
     Markdown extension described at https://pandoc.org/MANUAL.html#pandocs-markdown; 
     it may be that I don't need JS for this at all. */
  let myLists3 = document.querySelectorAll(".listStart3 ol");
  myLists3.forEach(function (x) { x.setAttribute("start", 3) } );
  
  let myLists4 = document.querySelectorAll(".listStart4 ol");
  myLists4.forEach(function (x) { x.setAttribute("start", 4) } );

  let myLists5 = document.querySelectorAll(".listStart5 ol");
  myLists5.forEach(function (x) { x.setAttribute("start", 5) } );
  
  let myLists6 = document.querySelectorAll(".listStart6 ol");
  myLists6.forEach(function (x) { x.setAttribute("start", 6) } );

  let myLists7 = document.querySelectorAll(".listStart7 ol");
  myLists7.forEach(function (x) { x.setAttribute("start", 7) } );
  
  
  /* Slide numbering when I have appendix slides. The idea is that I may have  
     30 slides but want the numbers in the lower right-hand corner to say 
     2/20, 2/20, 3/20, etc. -- to prevent the audience from thinking that I 
     need to get through 30 slides. 
       This function works, in the sense that I can call it in the console. 
    But I haven't found a way to work it into the display of slide numbers
    in the lower right-hand side of the screen. */
  function numLastMainSlide() { 
    return slideshow.getSlideByName("lastMainSlide").getSlideNumber(); 
  }  
  
  

//}
</script>