[JS][7kyu] Multiplicative Persistence... What's special about 2777777…

codewars/7kyu/multiplicative-persistence-what-s-special-about-277777788888899/koronya.js

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+// [JS][7kyu] Multiplicative Persistence... What's special about 277777788888899?
+// multiplicative-persistence-what-s-special-about-277777788888899
+// https://www.codewars.com/kata/5c942f40bc4575001a3ea7ec/train/javascript
+
+const per = (n) => {
+  if (n < 10) {
+    return []
+  }
+  const result = []
+  let num = n
+  while (true) {
+    const value = String(num)
+      .split('')
+      .reduce((acc, curr) => Number(acc) * curr, 1)
+    result.push(value)
+    num = value
+    if (value < 10) {
+      break
+    }
+  }
+  return result
+}
+
+// per(1)
+// per(10)
+// per(69)
+// per(277777788888899)
+// per(2379)