Learn JavaScript Properly 1-6 Codecademy JS Track (C)

4. Control Flow

SWITCH

We already know if, else and loops(for, while).
If there are multipule/many choices, we can use switch statement.

syntax:

var thisVar;
switch(thisVar) {
    case 'OPTION1':
        ACTION1;
        break;

    case 'OPTION2':
        ACTION2;
        break;
    
    default:
        defaultACTION;
}

Logical Operators

and(&&), or(||), not(!).
X && Y will be true only if X and Y are both true.
X || Y will be true if one of X or Y is true, or both true. (Will only be false if X and Y are both false.)
!true == false, !false == true.

Build “Choose Your Own Adventure”

Content not really interesting, it doesn’t guide you through the thoughts of the programe design…… just note some points:
use .toLowerCase() or .toUpperCase() to make the string all lower or upper case, so the comparison will not be case-sensitive.
The game structure: 1. A prompt for 3 choices. 2. A switch statement to determin what to do in all cases. 3. Each choice have an if…else statement to let user choose from.