react setstate spread object code example
Example: spread operator react
{...this.state} spreads out the "own" enumerable properties in
props as discrete properties on the Modal element you're creating.
For instance, if this.props contained a: 1 and b: 2, then
<Modal {...this.state} title='Modal heading'>
would be the same as
<Modal a={this.state.a} b={this.state.b} title='Modal heading'>