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Tyler McDonald
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Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points

Why do I have to use `name = name.trim();` instead of just `name.trim();`?

Why do I have to use name = name.trim(); instead of just name.trim();?

When I first ran my code I was not redeclaring the name variable each time, and it was not working. I realized this was incorrect. Why?

1 Answer

Steven Parker
Steven Parker
225,742 Points

Just like calling an independent function, calling a method causes code to run, but doesn't store the result anywhere. By adding the assignment, you capture the result and save it back in the variable.

It would be similar to putting x + 5; on a line, as compared to x = x + 5;