| 内容 | JavaScript获得当前日期是星期几,主要通过getDay函数获得当前日期是一个星期的第几天
 <!DOCTYPE html>
 <html>
 <body>
 <p id="demo">
 Click the button to display todays day of the week.
 </p>
 <button onclick="myFunction()">Try it</button>
 <script>
 function myFunction()
 {
 var d = new Date();
 var weekday=new Array(7);
 weekday[0]="Sunday";
 weekday[1]="Monday";
 weekday[2]="Tuesday";
 weekday[3]="Wednesday";
 weekday[4]="Thursday";
 weekday[5]="Friday";
 weekday[6]="Saturday";
 var x = document.getElementById("demo");
 x.innerHTML=weekday[d.getDay()];
 }
 </script>
 </body>
 </html>
 |