JavaScript Trivia Questions
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Programming language of the web. Play JavaScript trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play.
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Sample JavaScript Questions
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In a web browser, this built-in function displays a popup dialog box with a message and an OK button.
- alert()
- prompt()
- confirm()
- console.log()
This keyword declares a variable that cannot be reassigned after its initial value is set.
- var
- const
- let
- static
This operator checks both value and type equality, returning true only when both match exactly.
- ==
- !=
- ===
- =>
This method adds one or more elements to the end of an array and returns the new length.
- push()
- pop()
- shift()
- unshift()
This property returns the number of elements in an array.
- size
- length
- count
- total
This statement immediately exits a loop, skipping any remaining iterations.
- break
- continue
- return
- exit
This method converts an array into a string, with elements separated by commas.
- concat()
- split()
- slice()
- join()
This built-in object provides access to browser debugging tools, with methods like log(), warn(), and error().
- debug
- terminal
- console
- output
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