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A.8. Destructuring

Creating instances of objects means constructing them in memory. The term destructuring means changing the structure or taking objects apart. In ES5, you could deconstruct any object or a collection by writing a function to do it. ES6 introduced the destructuring assignment syntax that allows you to extract data from an object’s properties or from an array in a simple expression by specifying a matching pattern. It’s easier to explain by demonstrating an example, which we’ll do next.

A.8.1. Destructuring objects

Let’s say that a getStock() function returns a Stock object that has the attributes symbol and price. In ES5, if you wanted to assign the values of these attributes to separate variables, you’d need to create a variable ...