​x
 
<!DOCTYPE html>
<html>
<body>
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<h1>JavaScript 类型化数组</h1>
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<h2>find() 方法</h2>
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<p>包含大于 18 的值的首个元素的值：</p>
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<p id="demo"></p>
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<script>
const myArr = new Int16Array(10);
myArr.fill(20);
document.getElementById("demo").innerHTML = myArr.find(check);
​
function check(x) {
  return x > 18;
}
​
</script>
​
</body>
</html>
​