What this snippet does
When a property isn't found on an object, JavaScript walks up to its prototype — this is the prototype chain.
Expected output
woof eating true false true
Why practise typing this
Typing prototypes 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
- call/apply/bindPrototypes · intermediate
- let vs constVariables · beginner
- const configVariables · beginner
- const mutationVariables · beginner
- var hoistingVariables · beginner
- var scope leakVariables · intermediate