

0 / 2 embers
0 / 3000 xp
click for more info
Complete a lesson to start your streak
click for more info
Difficulty: 4
click for more info
Not enough gems
Cost: 6 gems
1: Learn JavaScript
incomplete
2: Basic Variables
incomplete
3: let and const
incomplete
4: Why JavaScript?
incomplete
5: Comments
incomplete
6: Numbers in JS
incomplete
7: Numbers Review
incomplete
8: Increment and Decrement
incomplete
9: Undefined vs. Undeclared
incomplete
10: Null vs. Undefined
incomplete
11: Dynamic and Weak
incomplete
12: Same Line Declarations
incomplete
13: JavaScript's Speed
incomplete
14: Strings
incomplete
15: Template Literals
incomplete
16: Java vs. JavaScript
incomplete
17: Semi-Colons in JS
incomplete
18: String Encoding
incomplete
19: Camel Case in JS
incomplete
Back
ctrl+,
Next
ctrl+.
This lesson's interactive features are locked, please to keep using them
Remember, in JavaScript all numbers are just "number" types. There is no distinction between "Float" types and "Integer" types.
2 + 1;
// 3
2 - 1;
// 1
2 * 2;
// 4
3 / 2;
// 1.5 (still just a "number")