Javascript Arithmetic Operator Question 8

Introduction

What is the output of the following code? 

var a = 1 + 2;
var b = "Hello " + "World";
var c = 1 + "2";
var d = hello + " World";

console.log(a);
console.log(b);
console.log(c);
console.log(d);



3
Hello World
12
RefError on hello

Note

Javascript coerced the number 1 to a string and applied string concat on it.




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