Problem with if in javascript

the game demands me an if statement but there is a missing identification before else but i dont know what is it can somebody help me?

Which puzzle? The tutorial?

What do you mean by “missing identification”? Is that a javascript error?

at the game of thor but the problem is on the code and at the left of the line number it apear an X that tolds me that there is a ‘missing identification’ and the code does not running