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  <title>Lodash _.findKey — nested matcher</title>
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  <h1>_.findKey — nested matcher</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      var accounts = {
        jane: { details: { name: "Jane Doe",   age: 28, isAdmin: false } },
        root: { details: { name: "Admin User", age: 35, isAdmin: true  } }
      };
      var lines = [];
      lines.push(String(_.findKey(accounts, { "details.isAdmin": true })));
      lines.push(String(_.findKey(accounts, { details: { isAdmin: true } })));
      lines.push(String(_.findKey(accounts, ["details.isAdmin", true])));
      document.getElementById("out").textContent =
        lines.join(String.fromCharCode(10));
    })();
  </script>
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Lodash _.findKey — nested matcher: nest the predicate, don't use dot paths (Try It)