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Date getDay() with switch statement

< html>     <script language="JavaScript">     <!--     function getDayString(num)     {       var day;    //Create a local variable to hold the string       switch(num)       {         case 0:           day="Sunday";           break;         case 1:           day="Monday";           break;         case 2:           day="Tuesday";           break;         case 3:           day="Wednesday";           break;         case 4:           day="Thursday";           break;         case 5:           day="Friday";           break;         case 6:           day="Saturday";           break;         default:           day="Invalid day";       }       return day;     }     theDate = new Date();     document.write("Today is ",getDayString(theDate.getDay()));     -->     </script>     </html>