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console.log(9/81); // divides 9 by 81 results to 0.1111111111111111 
console.log((9/81).toFixed(2)); // applying toFixed(2) results to 0.11

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console.log(9/81); // divides 9 by 81 results to 0.1111111111111111 
console.log((9/81).toFixed(2)); // applying toFixed(2) results to 0.11

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console.log(9/81); // divides 9 by 81 results to 0.1111111111111111 
console.log((9/81).toFixed(2)); // applying toFixed(2) results to 0.11

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console.log(2.998e8); // means 2.988 * 10 to the power of 8 or equal to 2.998 *10^8 = 299,800,000
console.log(3e2); // same as above, means 3*(10^2)

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var Durant = 35+"Durant"; // concatenate number and String, return value will be type of string 
console.log(typeof Durant); // returns string 
var NumBoolean = 5+true; // adds 1, returns 6 type of number 
console.log(typeof NumBoolean); // returns number 
console.log(14%5); // returns the remainder 4 
console.log(2**3); // returns 8, same as 2*2*2 
var x = 5; // x = 5 
var y = ++x; // y = 6 
var z = 5+5-2*8/2; // z =2 

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console.log("I am Glendon.\nAuthor of this blog"); 
//I am Glendon. 
//Author of this blog

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console.log('It\'s hard to say goodbye'); // It's hard to say goodbye
console.log('he'+'llo'); // hello

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console.log(typeof 9); // typeof is a unary operator, this code logs "number" in the console
console.log(2+2); // addition is an example of a binary operator, requires two numbers, before and after the addition operator
console.log(true ? 1 : 2); // returns the value before the colon if true, in this sample, 1
console.log(false ? 1 : 2); // if false, return the value after the colon

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if (false) 
if (null) 
if (undefined) 
if (0) 
if (NaN) 
if ('') 
if ("") 
if (document.all) [1]

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console.log(9>8); // true 
console.log(9>=8); // true 
console.log(9!==8); // true, use two equal sign when you need to use strict equalitiy