Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.Start your free trial
Why Don't you put inverted commas around 4 in var number = 4;
In the nextstep inverted commas were around hello but not around 4 why?
Data types. Anything in between the inverted commas is a 'string'; a text data type. If you type the number 4 not in inverted commas, then it is a number data type, and can be used to do calculations. You cannot do calculations with a text data type.
Steven Parker228,978 Points
i believe what you are referring to as "inverted commas" is typically called "quote marks" or just "quotes".
And quotes are used around strings, but not around numbers. You can do math (like "
number + 1") only on numbers.