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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects Mixing and Matching Arrays and Objects

Posted by James Steele
James Steele
2,844 Points

index in arrays

In this video the index is used to loop through the objects in the array, previously it was used to loop through the arrays in the array. So an index can be used to loop through anything inside an array? Is this because an array is an object itself?

1 Answer

Steven Parker
Steven Parker
229,785 Points
Steven Parker
Steven Parker
229,785 Points

Yes, an array is an object itself, but I'm not sure that relates to your question.

Regardless of what an array contains (objects, other arrays, numbers, strings, etc) you can use an index to get one specific item from the array. The index can be used in a loop to do something with each element of the array.

But arrays also have methods like "forEach", "map", and "reduce" which all can be used to do things with the array elements. So you have choices, depending on what it is you want to do.