What this snippet does
call and apply invoke immediately; bind returns a new function with this permanently set — useful for callbacks.
Expected output
Hello, Alice! Hi, Bob! Hey, Alice!
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
- prototype chainPrototypes · intermediate
- let vs constVariables · beginner
- const configVariables · beginner
- const mutationVariables · beginner
- var hoistingVariables · beginner
- var scope leakVariables · intermediate