Yes, there are some advantages to using Object.assign() over the spread operator (...) in certain situations:
Copying non-enumerable properties: Object.assign() can copy non-enumerable properties of an object, while the spread operator cannot. Non-enumerable properties are those that cannot be iterated over using a for...in loop. If you need to copy non-enumerable properties, you should use Object.assign().
Merging multiple objects: *Object.assign() * can merge multiple objects into a single object, while the spread operator only copies properties from a single object at a time. This can be useful when you need to combine properties from several objects into a single object.
Updating an existing object: Object.assign() can also be used to update the properties of an existing object. When you pass an existing object as the first argument to Object.assign(), it will update the properties of that object with the properties of the other objects that you pass as arguments. This can be useful when you want to update an object with new properties without overwriting any existing properties.
Internet Explorer compatibility: Object.assign() is supported in Internet Explorer 11 and newer versions, while the spread operator is not. If you need to support Internet Explorer 11 or older browsers, you should use** Object.assign()** instead of the spread operator.
In summary, while the spread operator is often more concise and easier to read, Object.assign() has some advantages in certain situations, such as copying non-enumerable properties, merging multiple objects, updating an existing object, and ensuring compatibility with older browsers.
Thanks for sharing!
I use the spread operator a lot actually for objects in React and TypeScript. Luckily IE11 is no longer needed to support and developing in React requires to program with immutable patterns. I did not know that it should be enumerable, but never encountered problems with that.
Regarding number 2, you can combine multiple objects properties. const c = { ...a, ...b } to merge two objects and create a new clone. const c = { ...a, overridePropertyA: "other value" } to use a as default values and override a single property. const c = { propertyA: "default value", ...a } to have a default value for propertyA and if also available in a, override it with that newer value.
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Yes, there are some advantages to using Object.assign() over the spread operator (...) in certain situations:
Copying non-enumerable properties: Object.assign() can copy non-enumerable properties of an object, while the spread operator cannot. Non-enumerable properties are those that cannot be iterated over using a for...in loop. If you need to copy non-enumerable properties, you should use Object.assign().
Merging multiple objects: *Object.assign() * can merge multiple objects into a single object, while the spread operator only copies properties from a single object at a time. This can be useful when you need to combine properties from several objects into a single object.
Updating an existing object: Object.assign() can also be used to update the properties of an existing object. When you pass an existing object as the first argument to Object.assign(), it will update the properties of that object with the properties of the other objects that you pass as arguments. This can be useful when you want to update an object with new properties without overwriting any existing properties.
Internet Explorer compatibility: Object.assign() is supported in Internet Explorer 11 and newer versions, while the spread operator is not. If you need to support Internet Explorer 11 or older browsers, you should use** Object.assign()** instead of the spread operator.
In summary, while the spread operator is often more concise and easier to read,
Object.assign()has some advantages in certain situations, such as copying non-enumerable properties, merging multiple objects, updating an existing object, and ensuring compatibility with older browsers.Thanks for sharing!
I use the spread operator a lot actually for objects in React and TypeScript. Luckily IE11 is no longer needed to support and developing in React requires to program with immutable patterns. I did not know that it should be enumerable, but never encountered problems with that.
Regarding number 2, you can combine multiple objects properties.
const c = { ...a, ...b }to merge two objects and create a new clone.const c = { ...a, overridePropertyA: "other value" }to useaas default values and override a single property.const c = { propertyA: "default value", ...a }to have a default value forpropertyAand if also available ina, override it with that newer value.