<!DOCTYPE html><html><body><p id="demo">Click the button to display the UTC date and time as a string.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var d = new Date();var x = document.getElementById("demo");x.innerHTML=d.toUTCString();}</script></body></html>希望本文所述对大家的javascript程序设计有所帮助。