​x
 
<!DOCTYPE html>
<html>
<body>
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<h1>JavaScript 数组</h1>
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<p>请单击按钮，检查 ages 数组中的任何值是否等于或大于特定数字：</p>
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<p>Minimum age: <input type="number" id="ageToCheck" value="18"></p>
<button onclick="myFunction()">试一试</button>
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<p>Any ages above: <span id="demo"></span></p>
​
<script>
const ages = [4, 12, 16, 20];
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function checkAdult(age) {
  return age >= document.getElementById("ageToCheck").value;
}
​
function myFunction() {
  document.getElementById("demo").innerHTML = ages.some(checkAdult);
}
</script>
​
</body>
</html>
​