This reverts commit 228180b1ef.
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228180b1ef
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adf879e8b2
@@ -20,7 +20,7 @@ var edx = edx || {},
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button = null;
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if (index > -1) {
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button = $(`.accordion .button-chapter:eq(${index})`);
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button = $('.accordion .button-chapter:eq(' + index + ')');
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}
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return button;
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