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diff --git a/docs/articles/chemCal_files/accessible-code-block-0.0.1/empty-anchor.js b/docs/articles/chemCal_files/accessible-code-block-0.0.1/empty-anchor.js
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+++ b/docs/articles/chemCal_files/accessible-code-block-0.0.1/empty-anchor.js
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+// Hide empty <a> tag within highlighted CodeBlock for screen reader accessibility (see https://github.com/jgm/pandoc/issues/6352#issuecomment-626106786) -->
+// v0.0.1
+// Written by JooYoung Seo (jooyoung@psu.edu) and Atsushi Yasumoto on June 1st, 2020.
+
+document.addEventListener('DOMContentLoaded', function() {
+ const codeList = document.getElementsByClassName("sourceCode");
+ for (var i = 0; i < codeList.length; i++) {
+ var linkList = codeList[i].getElementsByTagName('a');
+ for (var j = 0; j < linkList.length; j++) {
+ if (linkList[j].innerHTML === "") {
+ linkList[j].setAttribute('aria-hidden', 'true');
+ }
+ }
+ }
+});

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