logical operators in javascript code example

Example 1: js logical operators

Javascript Logical Operators
&& Logical and
|| Logical or
! Logical not

Example 2: or operator in javascript

//The OR operator in Javascript is 2 verticals lines: ||

var a = true;
var b = false;

if(a || b) {
	//one of them is true, code inside this block will be executed
}

Example 3: less than or equal to javascript

if(a <= 5){
   yourFunction();
}

Example 4: and operator in javascript

//&& returns true if both values are true
//or returns the second argument if the first is true
var a = true
var b = ""
var c = 1

true && "" //""
"" && 1 //""
false && 5 //false

Example 5: js !==

var x = 5;

// === 	equal value and equal type
// e.g. 1. 
x === 5 returns true

// e.g. 2.
x === "5" returns false

// !== not equal value or not equal type
// e.g. 1.
x !== 5 returns false

// e.g. 2.
x !== "5" returns true

// e.g. 3.
x !== 8 returns true

Example 6: and operator in javascript

//& (bitwise AND) operator
console.log(5 & 13); //outout: 5
/*
5  = 0101 (base 2)
13 = 1101 (base 2)
//AND every bit together from both numbers
+----+
|0101|
|1101|
+----+
|0101|
+----+
0101 = 5 (base 10)
*/