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Home » Quiz » ES6 Quiz

When you need to execute a function on an array and need the result to be a single output value, use _________.

Difficulty level
  • map
  • forEach
  • reduce
  • filter
The reduce method is used to execute a reducer function on each element of the array, resulting in a single output value.
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ES6 Quiz
Quiz
How does ES6 support dynamic property names in object literals?
How does the Symbol type interact with the Object.getOwnPropertySymbols() method?

Related Quiz

  • What is a use case for choosing WeakMap over Map?
  • In ES6, ________ methods are methods that are shared among all instances of a class.
  • What is the outcome of trying to mutate the properties of an object declared with const?
  • What types of values can be added to a WeakSet?
  • What is the main difference between higher-order functions and callbacks?

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