JavaScript adding

Question

How do you actually add?

because I have this kind of script:

var number = window.prompt ("Please Enter a number);
var number2 = window.prompt ("Please enter another number");
var sum = number + number2

window.alert (sum)

but instead of printing the sum, it just prints the two numbers together.

for example,
if number and number2 were both equal to 1

instead of saying 2, which is 1+1
it would say 11.

I skimmed through the math operators during the lessons, but I couldn't seem to find anything
Thanks!

Answer 1

this is better. Try like this.

var sum = eval(number) + eval(number2);

Answer 2

Try:
sum = parseInt(number) + parseInt(number2)

It should work for you.

Answer 3

Thank you For Answering Guys :)

Answer 4

if u use just "parseInt" then number just converted to integer.
But using "eval" u will be able to add any kind of number such as int, float, double.

So, It will be best to use "eval" instead of "parseInt".
var sum= eval(num1)+eval(num2);