星期几数组

Days of the week array

本文关键字：数组      更新时间：2023-09-26
var days = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
var birthDate = new Date(year, monthNumber/3, day);
var dayNumber = (birthDate.getDay());
var dayName = days.indexOf(dayNumber);
document.writeln ('I was born on a ' + dayName + '');{

为什么这行不通？它为我输出 -1 var 日号是正确的，显示正确的日数，但我如何让它对应/输出实际的日名？

这将起作用：

var dayName = days[dayNumber];
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