Difference in memory usage when using objects vs primitive values as function arguments

Question

Whenever I only need one specific object property, I will pass that property to the function, but I've seen my colleagues passing the whole objects only to use 1 value. Intuitively I believe my way is better, but I'd like to really know if it's better purely from the point of memory management.

const largeObj = {...};

dummyFn1(largeObj);
dummyFn2(largeObj.name);

So in essence - is there any difference in memory allocation between these two functions?

Passing the whole object would actually be faster / better on memory,.. As your just passing a reference. — Keith
– Keith, Commented Mar 28, 2018 at 15:41

Máté Safranka · Accepted Answer · 2018-03-28 15:42:10Z

3

Objects are passed by reference in JavaScript, so passing an object as an argument is basically just passing a memory pointer, which is negligible.

answered Mar 28, 2018 at 15:42

Máté Safranka

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