javascript or operator code example

Example 1:

||o1 = true  || true       // t || t returns true
o2 = false || true       // f || t returns true
o3 = true  || false      // t || f returns true
o4 = false || (3 == 4)   // f || f returns false
o5 = 'Cat' || 'Dog'      // t || t returns "Cat"
o6 = false || 'Cat'      // f || t returns "Cat"
o7 = 'Cat' || false      // t || f returns "Cat"
o8 = ''    || false      // f || f returns false
o9 = false || ''         // f || f returns ""
o10 = false || varObject // f || object returns varObject

Example 2: or in js

// The Or operator in Javascript is 2 vertical lines = ||

//Example
var firstnumber = 10;
var secondnumber = 20;

//The Or operator in action
if(firstnumber > 20 || secondnumber< 10) {
}

Example 3: not operator js

let a = true;

let b = !a;

console.log(b); //output: false

Example 4: javascript and operator

//AND Operator expressed as &&

const x = 7;
const y = 4;

(x == 7 && y == 5); // false
(x == 3 && y == 4); // false
(x == 7 && y == 4); // true

if (condition == value && condition == otherValue) {
  return something;
}

Example 5: js logical operators

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

Example 6: 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
}