Introduction to JavaScript

This lesson was a general introduction to JavaScript, and covered data types (strings, numbers, and booleans), operators (such as +, -, *, /, and %), and using the Math function to generate random numbers (such as with Math.floor). It also introduced variables, and demonstrated how the values stored in a variable can be changed. In the following example, the variable is initially declared with the string value "6:30AM", but is changed on the next line to "10:30AM". As a result, when console.log command is used, it will output "Morning alarm is set to: 10:30AM".