​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>JavaScript Array.find()</h1>
​
<p id="demo"></p>
​
<script>
var numbers = [4, 9, 16, 25, 29];
var first = numbers.find(myFunction);
​
document.getElementById("demo").innerHTML = "大于 18 的第一个值是：" + first;
​
function myFunction(value, index, array) {
  return value > 18;
}
</script>
​
</body>
</html>
​
​