Hands-On Data Structures and Algorithms with JavaScript

Maps and Objects

We will have a similar setup for Maps and Objects in a file called maps-obj.js, which will give us something like the following:

var Benchmark = require("benchmark");var suite = new Benchmark.Suite();var map = new Map();var obj = {};for(var i=0; i < 100; i++) {   map.set(i, i);   obj[i] = i;}suite   .add("Object #get", function(){      obj[19];   })   .add("Map #get", function(){      map.get(19);   })   //   .add("Object #delete", function(){      delete obj[99];   })   .add("Map #delete", function(){      map.delete(99);   })   .add("Object #length", function(){      Object.keys(obj).length;   })   .add("Map #size", function(){      map.size;   })   .on("cycle", function(e) {      console.log("" + e.target);   })   .run();

Now, to run this suite, run the following command on a Terminal: