What this snippet does
Classes wrap constructor functions and prototype assignments in a cleaner syntax — under the hood it's still prototypes.
Expected output
Dog makes a noise. true
Why practise typing this
Typing classes 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
- class extendsClasses · intermediate
- static membersClasses · intermediate
- private fieldsClasses · intermediate
- fluent chainingClasses · intermediate
- abstract methodsClasses · advanced
- mixinsClasses · advanced