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<head>
  <meta charset="utf-8">
  <title>Lodash groupBy — team</title>
</head>
<body>
  <h1>Lodash _.groupBy — group by property</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      var result = _.groupBy(
        [
          { id: 1, team: "alpha" },
          { id: 2, team: "beta" },
          { id: 3, team: "alpha" }
        ],
        "team"
      );
      document.getElementById("out").textContent = JSON.stringify(result);
    })();
  </script>
</body>
</html>

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Lodash _.groupBy — property (Try It)