{this.state.count}
<button onClick={this.add}>click</button>
</div>
);
}
}
export default App;according to official documents, repeating setState count: this.state.count + 1 is only added once
but this problem does not exist with count: PPthis.state.count.
can someone tell me what"s going on
React doesn't update this.state.count until the component is re-rendered
so every time this.setState ({count: this.state.count + 1}) is executed, this.state.count is 0, and the final result of setState is 1; while this.setState ({count: PPthis.state.count}) each time this.state.count increases by + 1, and the final result of setState is the result of this.state.count .
PPthis.state.countthis code is equivalent to
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