What this snippet does
Lexical scope means a function looks up variables in the scope where it was written, not where it is called.
Expected output
middle outer
Why practise typing this
Typing scope code builds muscle memory for the symbols and indentation JavaScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More JavaScript practice
- block scopeScope · beginner
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- var hoistingVariables · beginner
- var scope leakVariables · intermediate