reactjs - 如何立即更新状态变量

Question

我应该如何编码，以便我可以立即将 API 响应保存到状态并在 setState() 之外访问更新的响应。

state={
 response: []
}

this.setState({
  response: res // res is coming from API response
});
console.log(this.state.response); // it should show the API response instead of empty []

标签： reactjs

Answer 1

使用回调：

...
this.setState({
  response: res // res is coming from API response
}, function() {
  console.log(this.state.response);
});
...