How to Efficiently Convert a JavaScript Object to an Array?

JavaScript Object to Array Conversion with jQuery

When working with JavaScript objects that need to be stored as arrays, it's essential to find efficient methods for conversion. This question explores an issue where an object with array-like elements was converted to an array using $.each.

Original Approach:

As mentioned in the question, an array was created (x) and the object's key-value pairs were iterated over, pushing each value into the array. This method works but involves manual iteration and may not be the most efficient.

Functional Approach:

The question suggests the possibility of a more optimized approach. One such solution is to leverage functional programming techniques:

var obj = {1: 11, 2: 22};
var arr = Object.keys(obj).map(function (key) { return obj[key]; });

ES6 Arrow Function:

With ES6, arrow functions can simplify the syntax:

Object.keys(obj).map(key => obj[key])

Object.values (ES7):

ES7 introduced Object.values, which directly extracts values from an object:

var arr = Object.values(obj);

Underscore/Lo-Dash:

If Underscore or Lo-Dash is part of your project, you can use their _.values function:

var arr = _.values(obj)

These functional approaches provide a concise and efficient way to convert an object into an array, offering a more streamlined solution for your application.

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