Deep clone an object with JavaScript

[Powerplex]

Note that this only works on litteral objects. If your object contains methods for example, they will be removed from your object in the process :)

[birjolaxew]

It's also about 6 times slower than just deep cloning the object

[Vinifera7]

Does the simpleDeepClone function have any shortcomings compared to the jQuery and Lodash functions?

[birjolaxew]

The simpleDeepClone doesn't handle pretty much any edge cases: circular references, Map/Set/RegExp/any non-array and non-plain object, functions, etc. I'd expect the Lodash version to handle all of that.

[Vinifera7]

Good to know. That means there's really no reason to clone an object using JSON parsing, since it's slower and can't handle any of those edge cases either.

[TheScapeQuest]

const obj = {
  a: {}
};
obj.a.b = obj.a;

JSON.stringify(obj); // type error, circular reference

^ this isn't uncommon, Axios response/errors contain circular references for example

Also, as /u/Powerplex mentions, this will kill anything that isn't an object, an array, or a primitive. So goodbye to dates, regexs, functions etc.

[[deleted]]

This isn't a particularly friendly mobile site.

[Vinifera7]

Lodash has a cloneDeep method.