How does Java HashMap implementation work?

Arrays in javascript

I am just starting to learn how to program and am wondering..what exactly is an Array.  How does that look at a lower level? 

Arrays? JavaScript?

What is an array in JavaScript?

An array is a collection of items...

["orange", "apple", "pear"]
These items are an ordered collection. An array in javascript has a number of elements. Each element has an index. Index starts at 0. So pear is at position 2...

var myArray = ["orange", "apple", "pear"]
myArray[2] //returns "pear"

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Arrays in javascript

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What is an array in JavaScript?

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