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

JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Build a Random Number Guessing Game

guram dgebuadze
seal-mask
.a{fill-rule:evenodd;}techdegree
guram dgebuadze
Front End Web Development Techdegree Student 4,122 Points
Posted by guram dgebuadze
.a{fill-rule:evenodd;}techdegree
guram dgebuadze
Front End Web Development Techdegree Student 4,122 Points

Concatenation (string and number)

In javascript If we are concatenating string and number, does this mean that variable used for number is becoming string? (if yes why and how?)

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

When you combine things of different types, the system converts one to the other's type if possible. This is called "type coercion".

If the conversion isn't possible (or the system doesn't know how) you would get an error instead.

Lawrence Wachira
Lawrence Wachira
593 Points

Thanks. Pretty clear explanation.