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karan Badhwar
Web Development Techdegree Graduate 18,135 PointsWhat to use, when not sure what type of value to receive
What to use parseInt(), parseFloat(), or + Unary operator .
When we are not sure what kind of value we can get it can be a whole number or a decimal number too ? so which one to use out of these 3?
As I checked parseFloat works fine even if the value is whole number or a number with decimal?
1 Answer
Jason Larson
8,361 PointsIt depends on what potential values you might receive, and what you are planning to do with them. If you are sure you are only going to get whole or decimal values, then you actually don't need any of them, unless they are being received as strings that look like numbers. If that is the case, any of them are probably fine, though I would personally tend toward the Unary + operator just because it's the shortest to write. If you might get values like true or false, the Unary + operator might return unexpected results, as it will convert boolean values to 1/0. If you might end up with octal or hex values, then you might opt to use parseInt(), as you can specify the radix for the conversion.