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<head>
  <meta charset="utf-8">
  <title>pickBy — vs omitBy</title>
</head>
<body>
  <h1>pickBy vs omitBy</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    var object = { a: 1, b: "2", c: 3 };
    document.getElementById("out").textContent = [
      JSON.stringify(_.pickBy(object, _.isNumber)),
      JSON.stringify(_.omitBy(object, _.isNumber))
    ].join("\n");
  </script>
</body>
</html>

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Lodash _.pickBy — vs omitBy (Try It)