Shower::prev: added prevSteps check

e5470620 · miripiruni · 51796e47 · e5470620
Commit e5470620 authored May 03, 2013 by miripiruni
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shower.js shower.js +4 -0

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--- a/shower.js
+++ b/shower.js
@@ -107,6 +107,10 @@ window.shower = window.shower || (function(window, document, undefined) {
            prevSteps = document.getElementById(slide.id).querySelectorAll('.next.active');
+            if ( ! prevSteps || prevSteps.length < 1) {
+                return false;
+            }
            if (slide.innerComplete > 0) {
                slide.innerComplete--;
                prevSteps[prevSteps.length - 1].classList.remove('active');