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源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> </head> <body> <p>点击按钮检测数组中是否有元素大于 18。</p> <button onclick="myFunction()">点我</button> <p id="demo"></p> <script> var ages = [3, 10, 18, 20]; function checkAdult(age) { return age >= 18; } function myFunction() { document.getElementById("demo").innerHTML = ages.some(checkAdult); } </script> </body> </html>
运行结果