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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>update — increment</title>
</head>
<body>
  <h1>Increment</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    var game = { players: [{ score: 10 }] };
    _.update(game, ["players", "0", "score"], function (n) {
      return n + 1;
    });
    document.getElementById("out").textContent = game.players[0].score;
  </script>
</body>
</html>

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Lodash _.update — increment (Try It)