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  <title>Lodash _.keys - own enumerable keys</title>
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  <h1>_.keys - own enumerable keys</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      var user = {
        name: "John",
        age: 30,
        email: "john@example.com"
      };
      var names = _.keys(user);
      var lines = [
        "keys: " + JSON.stringify(names)
      ];
      names.forEach(function (key) {
        lines.push(key + ": " + user[key]);
      });
      document.getElementById("out").textContent = lines.join("\n");
    })();
  </script>
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