HTML引入外部JS文件
<!--引入外部文件的方式-->
<script type="text/javascript" src="attack.js"></script>
//attack.js 代码 function attackEnemy() { document.write("land on"); alert("ready go"); }
参考:
https://blog.csdn.net/u012871987/article/details/72638373/
http://www.fly63.com/article/detial/1183
https://www.cnblogs.com/miaoying/p/8337613.html