JS Array Iteration

Array Iteration Methods

Array iteration methods traverse through every item within the array:

• Array forEach
• Array map()
• Array flatMap()
• Array filter()
• Array reduce()
• Array reduceRight()

See Also:

• Basic Array Methods
• Array Search Methods
• Array Sort Methods
• Array every()
• Array some()
• Array from()
• Array keys()
• Array entries()
• Array with()
• Array Spread (…)

JavaScript Array forEach()

The forEach() method invokes a function (known as a callback function) once for every element in the array.

Example

Note that the callback function takes three arguments:

• The item value
• The item index
• The array itself

In the provided example, only the value parameter is utilized. The example can be restructured as follows:

Example