专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> </head> <body> <p id="demo">单击按钮显示给定时间的毫秒数：</p> <button onclick="myFunction()">点我</button> <script> function myFunction(){ var d = new Date("July 21, 1983 01:15:00:526"); var x = document.getElementById("demo"); x.innerHTML=d.getMilliseconds(); } </script> </body> </html>
运行结果