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  <meta charset="utf-8">
  <title>Array every() — one fails</title>
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<body>
  <h1>every() — all greater than 10?</h1>
  <pre id="out"></pre>
  <script>
    (function () {
      var numbers = [2, 4, 6, 8, 10];
      var allGreaterThanTen = numbers.every(function (num) {
        return num > 10;
      });
      document.getElementById("out").textContent = String(allGreaterThanTen);
    })();
  </script>
</body>
</html>

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JavaScript Array every() — one fails (Try It)