Octal and Hexadecimal numbers

var x = 100,
    y = 012, // Octal number which is equal to 10
    z = 002;
    
console.log(x+y+z); // 112 not 114
    
___________________________________________________________________________
    
var x = 100,
    y = 0x12, // Hexadecimal number which is equal to 18, 0x10 = 16, 0x20 = 32, 0x30 = 48
    z = 002;

console.log(x+y+z); // 120
    
    
    
___________________________________________________________________________
____________________________ERROR__________________________________________
___________________________________________________________________________



Below two will throw an error because of 'use strict';
    
'use strict';
    
var x = 100,
    y = 012, // Octal number which is equal to 10
    z = 002;
    
console.log(x+y+z); // 112 not 114

*******************************************************************************************

var x = 100,
    y = 0x12, // Hexadecimal number which is equal to 18, 0x10 = 16, 0x20 = 32, 0x30 = 48
    z = 002;

console.log(x+y+z); // 120


___________________________________________________________________________
____________________________ERROR FIX______________________________________
___________________________________________________________________________



To fix the above two scenarios we will use parseInt

'use strict';
    
var x = 100,
    y = parseInt(12, 8), // Octal number which is equal to 10
    z = 002;
    
console.log(x+y+z); // 112 not 114

*******************************************************************************************

var x = 100,
    y = parseInt(12, 16), // Hexadecimal number which is equal to 18, 0x10 = 16, 0x20 = 32, 0x30 = 48
    z = 002;

console.log(x+y+z); // 120