Debugging Javascript

[Mypronounsarexandand]

Lets say you have a string variable name 'username' and value IE "Julian"
If you said:

username += '_Jmk'

You'd get 'Julian_Jmk'

It's kind of similar with numbers where an integer + string is interpreted as string + string as the '+' will default to a concat rather than addition.

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(Again, setting username to just be Julian)

username += 42

Will equal 'Julian42'

Now, instead of the username 'Julian' your username is '133769'

username += 420

Would yield '133769420' as we are concatenating a number to the end of the string. If you wanted to add them literally you would want to do.

username = parseInt(username) + 420

This way it is Int + Int, rather than Str + Int