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How to use the spread operator to update an object value with JavaScript?

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Sometimes, we want to use the spread operator to update an object value with JavaScript.

In this article, we’ll look at how to use the spread operator to update an object value with JavaScript.

How to use the spread operator to update an object value with JavaScript?

To use the spread operator to update an object value with JavaScript, we use the spread operator in a new object.

For instance, we write

const o2 = { ...o1, a: "updated a" };
console.log(o2);

to spread the properties of o1 into a new object.

Then we add a or override the existing value of a with a: "updated a".

The new object is assigned to o2.

Conclusion

To use the spread operator to update an object value with JavaScript, we use the spread operator in a new object.

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

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