Learn Functional Programming by Building a Spreadsheet - Step 16

Hello. I need help with getting past this step. I’ve been on it for a while now, and I’ve tried everything I know to do, but it doesn’t work.

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" href="./styles.css" />
    <title>Functional Programming Spreadsheet</title>
  </head>
  <body>
    <div id="container">
      <div></div>
    </div>
    <script src="./script.js"></script>
  </body>
</html>
/* file: styles.css */
#container {
  display: grid;
  grid-template-columns: 50px repeat(10, 200px);
  grid-template-rows: repeat(11, 30px);
}

.label {
  background-color: lightgray;
  text-align: center;
  vertical-align: middle;
  line-height: 30px;
}
/* file: script.js */
const range = (start, end) => Array(end - start + 1).fill(start).map((element, index) => element + index);
const charRange = (start, end) => range(start.charCodeAt(0), end.charCodeAt(0)).map(code => String.fromCharCode(code));

window.onload = () => {
  const container = document.getElementById("container");
  const createLabel = (name) => {
    const label = document.createElement("div");
    label.className = "label";
    label.textContent = name;
    container.appendChild(label);
  }
  const letters = charRange("A", "J");
  letters.forEach(createLabel);

// User Editable Region

  range(1, 99).forEach(number => {
    createLabel(number);
    letters.forEach(letter => {});
  })

// User Editable Region

}

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Challenge Information:

Learn Functional Programming by Building a Spreadsheet - Step 16

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This is so funny. It simply passed after I removed the commas after the two functions nested in the letter call back function.

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