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Finally, add a # symbol and lastName in uppercase to the end of the userName string. The final value of userName is "231
I don't get what I'm doing wrong.
var id = "23188xtr"; var lastName = "Smith"; var userName = id.toUpperCase(); + lastName.toUpperCase(); + "#"
The issue is the semicolons you've added after the . toUpperCase methods on the line you assigned a value to userName.
var id = "23188xtr"; var lastName = "Smith"; var userName = id.toUpperCase() + lastName.toUpperCase() + "#"