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  <title>Lodash _.toPairsIn vs _.toPairs</title>
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  <h1>_.toPairsIn vs _.toPairs</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      function Greeter(msg) { this.msg = msg; }
      Greeter.prototype.greet = function () { return this.msg; };
      var g = new Greeter("Hi");
      var lines = [
        "_.toPairs length: " + _.toPairs(g).length,
        "_.toPairsIn length: " + _.toPairsIn(g).length,
        "",
        "toPairs:",
        JSON.stringify(_.toPairs(g), null, 2),
        "",
        "toPairsIn keys:",
        JSON.stringify(_.toPairsIn(g).map(function (p) { return p[0]; }), null, 2)
      ];
      document.getElementById("out").textContent = lines.join("\n");
    })();
  </script>
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