Web Reference: Spread Operator The JavaScript spread operator (...) allows us to quickly copy all or part of an existing array or object into another array or object. Jul 23, 2025 · The three dots syntax (...) is used by two operators i.e. the Spread Operator and Rest Parameter. The Spread operator lets you expand an iterable like an object, string, or array into its elements while the Rest operator does the inverse by reducing a set of elements into one array. In React, the spread operator {...this.props} is used to pass all properties of an object as individual props to a component. It's a convenient way to avoid manually listing out each prop when rendering a component.
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