array.includes()

JavaScript has many array methods that can help you solve a variety of problems. One of those methods is the includes() method. The includes() method determines whether an array includes a certain element, returning as a Boolean.

Syntax

array.includes(includes(findElement[, fromIndex])

Parameters

  • The element you are looking for in the array.
  • Required
  • The array index of the current element at which to begin searching for the findElement.
  • Optional

Return Value

The return value is a Boolean, which returns true if the value of the element was found, and false if it was not found.

Things to consider

  • If the fromIndex value is negative, the search starts from the index of array.length - fromIndex by asc.
  • If fromIndex is greater than or equal to the length of the array, false is returned. The array will not be searched.

Example

Happy coding!

More Info!

JavaScript docs

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