1
我试图在日期/时间之前显示问候,具体取决于一天中的某个时间。如何在日期/时间内获得自定义消息?
- 早安
- 下午好
- 晚上好
我有消息的工作。
我还希望将日期和时间显示为“它是在日期时间”。
每当我尝试改变时间日期代码的东西,我甚至不能再显示它。
任何建议都会有所帮助。
function MakeArray(n) {
this.length = n;
}
monthNames = new MakeArray(13);
monthNames[1] = "January";
monthNames[2] = "February";
monthNames[3] = "March";
monthNames[4] = "April";
monthNames[5] = "May";
monthNames[6] = "June";
monthNames[7] = "July";
monthNames[8] = "August";
monthNames[9] = "September";
monthNames[10] = "October";
monthNames[11] = "November";
monthNames[12] = "December";
dayNames = new MakeArray(8);
dayNames[1] = "Sunday";
dayNames[2] = "Monday";
dayNames[3] = "Tuesday";
dayNames[4] = "Wednesday";
dayNames[5] = "Thursday";
dayNames[6] = "Friday";
dayNames[7] = "Saturday";
function dayPart(oneDate) {
var theHour = oneDate.getHours();
if (theHour < 12) {
return "Good morning";
}
if (theHour < 18) {
return "Good afternoon";
}
return "Good evening";
}
function customDateString(oneDate) {
var theDay = dayNames[oneDate.getDay() + 1],
theMonth = monthNames[oneDate.getMonth() + 1],
theYear = oneDate.getYear();
theYear += (theYear < 100) ? 1900 : 0;
return theDay + ", " + theMonth + " " + oneDate.getDate() + ", " + theYear;
}
var today = new Date();
alert(dayPart(today) + "." + customDateString(today));
你不需要在你的'构造函数'中返回this;'。在JavaScript数组中,索引从'0'开始,如果你想使用任何泛型方法,那么你也应该考虑这一点。所以你的长度应该是'13'和'8',因为'0'是你稀疏阵列中的'洞'。 – Xotic750
欣赏帮助。我不确定输出格式中哪里出错。我还需要在那里添加时间,但我已经达到了这一点,任何我试图做出的改变最终都会搞乱我输出的结果。这对我来说都是新鲜的,所以试图弄清楚我的变化如何影响其余部分。 – user3199950
'年= +(年<100)'背后的理由是什么? 1900:0;'? – Xotic750