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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">单击按钮显示给定时间中一周的某天（UTC）。</p> <button onclick="myFunction()">点我</button> <script> function myFunction(){ var d=new Date(); var weekday=new Array(7); weekday[0]="周日"; weekday[1]="周一"; weekday[2]="周二"; weekday[3]="周三"; weekday[4]="周四"; weekday[5]="周五"; weekday[6]="周六"; var x = document.getElementById("demo"); x.innerHTML=weekday[d.getUTCDay()]; } </script> <p><strong>注意:</strong> 0=周日, 1=周一, 类推。</p> </body> </html>
运行结果：