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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>runoops基础编程教程(runoops.com)</title> </head> <body> <p id="demo">单击按钮显示UTC时间</p> <button onclick="myFunction()">点我</button> <script> function addZero(i) { if (i < 10) { i = "0" + i; } return i; } function myFunction() { var d = new Date(); var x = document.getElementById("demo"); var h = addZero(d.getUTCHours()); var m = addZero(d.getUTCMinutes()); var s = addZero(d.getUTCSeconds()); x.innerHTML = h + ":" + m + ":" + s; } </script> </body> </html>
运行结果：