Not working

Question

please help why is it not adding numbers
https://code.sololearn.com/WkC78F1kW4Sp/?ref=app

Answer 1

This will make your code to add numbers

var result= num1*1+num2*1;

Answer 2

Thanks @visph, I would've marked your answer as best if I've got the power, but ughhh :D

Answer 3

work fine, but prompt get a string. You need to convert it to number

Answer 4

@Dev: eval() is to be avoided, as it's relatively unsafe, and almost there's other implicit and explicit ways to convert string to numbers:

> writing an expression where cast is implicit (as suggested by @Siddhart Saraf):
var result = num1 + num2;
... will produce string if any of num1 or num2 is string, but number if both are number: as * operator id done before + operator, multply by one will just implicitly cast the variable to number; but (+num) will do same job, with a few less cpu usage than doing multiplication (while there's no compiler/interpreter optimization taking in account that *1 has not to be really computed):
var result = (+num1)+(+num1);
(parenthesis are required to start by converting to number, and so get an implicit number result

> writing explicit cast:
num = parseInt(str);
num = parseFloat(str);
num = Number(str);
... so you can use it (them) inlined:
var result = Number(num1)+Number(num2)

Differences between parseInt() and parseFloat() is obvious, but less with Number(): Number() will convert to integer or float value according to context, and is a few more restrictive than other ones in accepting values as valid:
Number('42text') === NaN;
parseInt('42text') === 42;

Answer 5

@Dev: maybe asker will do it... or not ;P

Answer 6

thank you @visph