JavaScript Basics - Using String Methods // Question

Question

Hi all!
I'm sorry for posting a similar question to this post (https://teamtreehouse.com/community/question-2-of-using-string-methods):
but I don't quite get WHY am I supposed to type "#" in the first place ?
====================
Question:
Use the JavaScript .toUpperCase( ) string method to assign an all uppercase version of the id variable to the userName variable.
My Answer:
```
var id = "23188xtr";
var lastName = "Smith";
var userName = (id + lastName).toUpperCase();
document.write(userName);
```
why am i supposed to write it this way ?
```
var userName = (id + "#" + lastName).toUpperCase();
```

Adam Beer · Answer

Hi Igor! If you get stuck, ask us bravely! First step, save id.toUpperCase() value in the userName. Now userName value equal to "23188XTR". Second step, use this on the other variable or add it to the userName variable. Last step, between id and lastName add to the "#" symbol.
You wrote this:

var userName = (id + lastName).toUpperCase();

By the way, your solution is good, but

var userName = id + lastName.toUpperCase();
document.write(userName);

Don't use brackets and if I remember good don't use document.write, just save the value inside the userName. If you don't use the output is 23188xtrSMITH. You need to add it separately.

var userName = id.toUpperCase() + "#" + lastName.toUpperCase();

Hope this help.

richporter · Answer

I imagine it is just to get you accustomed to working/concatenating with various types of string and variable.

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Igor Kushnir

Igor Kushnir

JavaScript Basics - Using String Methods // Question

2 Answers

Adam Beer

Adam Beer

Igor Kushnir

Igor Kushnir

Adam Beer

Adam Beer

richporter

richporter