How is a JavaScript hash map implemented?

Question

I want to implement a hash map in a JavaScript to analyze the performance. Can anyone help me how I can able to do that?

Answer 1

Basically, in JavaScript, every object is a hashmap that will accept strings or a symbol as a key. You can use the below code snippet to implement it:

var map = {};

// add a item

map[key1] = value1;

// or remove it

delete map[key1];

// or determine whether a key exists

key1 in map;

I hope this will help.

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