This week I’ve organised a meetup on ES2015 in my community, where the speaker presented his favourite features of the language.
Right after the talk I had a chance to talk with my best friend that was asking if destructuring assigns the values copying the value to the new variable or instead by reference if you work with Object or Array.
Because I hadn’t a change before to work with this new ES2015 feature I did a quick example just to get an answer to this question.
It looks like destructuring feature works by reference and it’s not copying the value.
That means anytime you’re going to change a value inside a variable that contains an Object or Array assigned via destructuring, also the original Object or Array will be affected as you can see in this simple example: destructuring example ES2015
So when you work with destructuring bear in mind to pay a lot of attention when you change a value inside your destructured Objects and Arrays!