Javascript Basic - 20180107

0. node CLI, or JS console

1. Primitive data types
number: 1, -3, 4.5
string: "hello", "nice to meet you"
boolean: true, false
null / undefined

2. Variables
variable: declare, assignment
assignment: =
operators: +, -, *, /, %
comparison: >, >=, ==, !=, ===, !==

3. Conditional flow
if - else if - else
loop:  while, for

4. Guess game
develop a code to guess a number between 1 and 100