Object-Oriented JavaScript - Third Edition

Exercises

1. What is the result of executing each of these lines in the console? Why?

           > var a; typeof a; 
           > var s = '1s'; s++; 
           > !!"false"; 
           > !!undefined; 
           > typeof -Infinity; 
           > 10 % "0"; 
           > undefined == null; 
           > false === ""; 
           > typeof "2E+2"; 
           > a = 3e+3; a++; 
   

2. What is the value of v after the following?

           > var v = v || 10; 
   

   Experiment by first setting v to 100, 0, or null.

3. Write a small program that prints out the multiplication table. Hint: use a loop nested inside another loop.