xxxxxxxxxx<html><head><meta charset="utf-8"><title>W3Cschool教程(w3cschool.cn)</title></head><body><p>函数可作为一个表达式使用。</p><p id="demo"></p><script>function myFunction(a, b) { return a * b;}var x = myFunction(4, 3) * 2;document.getElementById("demo").innerHTML = x;</script></body></html>