JavaScript—An Object Based Language - Beginning JavaScript - page 142

Save this page as ch5 _ example7.html . When you load it into a web browser, it writes a greeting based
on the time of day as well as the current time, as shown in Figure 5-6.
figure 5-6
The first two lines of code declare two variables— greeting and nowDate :
var greeting;
var nowDate = new Date();
The greeting variable will be used shortly to store the welcome message on the website, whether this is
"Good Morning" , "Good Afternoon" , or "Good Evening" . The nowDate variable is initialized to a new
Date object. Note that the constructor for the Date object is empty, so JavaScript will store the current
date and time in it.
Next, you get the information on the current time from nowDate and store it in various variables. You
can see that getting time data is very similar to getting date data, just using different methods:
var nowHour = nowDate.getHours();
var nowMinute = nowDate.getMinutes();
var nowSecond = nowDate.getSeconds();
You may wonder why the following lines are included in the example:
if (nowMinute < 10) {
nowMinute = "0" + nowMinute;