Day 033 - Unary Plus Operator

In the previous day you looked at how it's possible to concatenate strings, but what if you want a string to work as a number?

5 + '5'

Will give you the number 5, then concatenate 5, giving you 55.

5 + Number('5')

In this case the string will be converted to a number, giving you 10.

It's also possible to do the same thing using the 'Unary Plus Operator' like so:

5 + +'5'

Although +'5' is less code, you might want to use Number('5') if you're still new to the 'Unary Plus Operator' as it's more descriptive.

Demo.

Hey... wouldn't it be awesome if there was some sort of site that would all you to work out the performance between using the number and operator methods and anything JavaScript related for that matter... Head on over to Day-34.