Array indexes can be negative

My approach to storing objects for a grid involves using a two-dimensional array. In this case, the grid is hexagonal, making it more convenient to utilize a coordinate system centered at (0, 0) and ranging from -r to r.

The following source suggests that negative indices in an array are not actual indices, but rather properties of the array itself.

Here are my two concerns:

  1. Will the speed of operations performed on the array be affected by this? Can negative indices still be accessed in constant time?

  2. How can I remove negative indices? My attempt using splice resulted in deleting incorrect indices (as seen below).

javascriptarrays

Answer №1

  1. In the realm of JavaScript, an object is essentially a fancy hashmap where properties can be accessed in constant time.

  2. To remove a property from a JavaScript object, you can use the delete keyword. For instance, you could do delete a["-1"]. Any property of a JavaScript object can be accessed using either dot notation or bracket notation.

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