diff --git a/codewars/7kyu/quicksum/koronya.js b/codewars/7kyu/quicksum/koronya.js
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+// [JS][7kyu] Quicksum
+// quicksum
+// https://www.codewars.com/kata/569924899aa8541eb200003f/train/javascript
+
+
+const UPPER_ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+const indexOfUpperAlphabet = (char) => UPPER_ALPHABET.indexOf(char) + 1
+const isUpperAlphabetOrSpace = (char) => {
+  return UPPER_ALPHABET.includes(char) || char === ' '
+}
+
+const quicksum = (packet) => {
+  if (packet.split('').some((char) => !isUpperAlphabetOrSpace(char))) {
+    return 0
+  }
+  
+  return packet.split('').map((char, index) => indexOfUpperAlphabet(char) * (index + 1)).reduce((sum, curr) => sum + curr, 0)
+}
+
+
+
+
+
+  // quicksum("ACM") === 46
+  // quicksum("MID CENTRAL") === 650
+  // quicksum("BBC") === 15
+  // quicksum("???") === 0
+  // quicksum("axg ") === 0
+  // quicksum("234 234 WEF ASDF AAA 554211 ???? ") === 0
+  // quicksum("A C M") === 75
+