<h3>访问 SCRIPT 元素</h3> <script id="myScript" src="demo_script_src.js"></script> <p>点击按钮获取外部脚本文件的 URL。</p> <p id="demo"></p> <button onclick="myFunction()">尝试一下</button> <script> function myFunction() { var x = document.getElementById("myScript").src; document.getElementById("demo").innerHTML = x; }; </script>