Arithmetic Addition

+ symbol is used for arithmetic addition operator

arithmetic addition operator takes two values/variables as operands and returns their sum

a + b  //variables
6 + 74 //values

more than two values/variables can be summed in a single expression by chaining addition operator

a + b + c + d        //variables
6 + 74 + 5 + 10 + 85 //values

Examples

1. addition of values in a and b

var a = 10;
var b = 25;

var sum = a + b;

console.log(sum);

2. addition of more than two values/variables

var a = 10;
var b = 25;
var c = 14;

var sum = a + b + c;

console.log(sum);