numbers in javascript code example

Example 1: javascript number length

var num = 1234
number.toString().length; // 4

Example 2: js numbers

// Numbers:
1;
-99;
0.345345;

//Making variables with let:
let numberOfFriends = 1;

//Incrementing:
numberOfFriends += 3; //numberOfFriends is now 4

// Variables with const
const minimumAge = 21; //CANNOT REASSIGN!

//Booleans - true or false values
true;
false;
let isHappy = true;

//Naming Conventions
// Use upper camel-cased names:
let numberOfChickens = 6; //GOOD
// NOT THE JS WAY:
// let number_of_chickens = 6;

Example 3: js int

var myInt = 69420

1+1//int
1+"1"//string

Example 4: JavaScript Numbers

var x = 3.14;    // A number with decimals
var y = 3;       // A number without decimals