Object-Oriented JavaScript - Second 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.