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<!DOCTYPE html> <html> <body> <h2>JavaScript 函数</h2> <p>此示例调用执行计算的函数，并返回结果：</p> <p id="demo"></p> <script> function myFunction(p1, p2) { return p1 * p2; } document.getElementById("demo").innerHTML = myFunction(4, 3); </script> </body> </html>