Play random major and/or minor chords

1 files changed, 15 insertions, 0 deletions

diff --git a/src/lib/dom.ts b/src/lib/dom.ts
new file mode 100644
index 0000000..0b6a0ab
--- /dev/null
+++ b/src/lib/dom.ts
@@ -0,0 +1,15 @@
+export function show(elements: Element[]): void {
+  document.body.innerHTML = ''
+  elements.forEach(element => document.body.appendChild(element))
+}
+
+/* Trigger animation in any case.
+ *
+ * Trigger reflow between removing and adding the classname.
+ * See https://css-tricks.com/restart-css-animation/
+ */
+export function triggerAnimation(element: HTMLElement, animation: string) {
+  element.classList.remove(animation)
+  void element.offsetWidth
+  element.classList.add(animation)
+}