Learn JavaScript on the Now Platform: Lesson 22 - Introduction to arrays

Lesson 22 introduces you to the concept of arrays. Arrays are a great way to keep a list of the same data type (integer, string, etc) in memory and address them as one unit or individually.

[baskinginhisgrace]

Hello Chuck! Thank you for this series. I do not think however that saying that arrays are complex data types that store elements of the same type in a list format is accurate because arrays can store elements of different types such as single elements, other arrays(sub-arrays), objects.... all of these can be stored in a single array variable. It would be wonderful and interesting to hear your opinion on this. thanks

[yasseralkindi]

Hi Chuck fantastic series, loving content and your delivery - thanks and happy new year. My question is regarding lines 9-14 - why is it better to store the length in var len?

[rovanmonteiro]

Howdy Chuck,

when i tried the 'typeof' on a array. it showed me the data type as Object. I thought it would be shown as Array. Any idea why is it so ?

var list = [1, 3, 5];

gs.info (typeof list);