如何在状态中遍历相似对象并将其推入对象？

Question

我的this.state对象中有几个变量：this.state = {      draw_number: '',      user_number_1: '',      user_number_2: '',      user_number_3: '',      user_number_4: '',      user_number_5: '',      user_number_6: '',    }我如何遍历它们并将它们添加到以下对象中：results {  numbers: [],  draws: x}这是我目前的解决方案： this.state = {      draw_number: '',      user_number_1: '',      user_number_2: '',      user_number_3: '',      user_number_4: '',      user_number_5: '',      user_number_6: '',    }  }  submitHandler = () => {    let results = {};    for (let i=1; i<=6; i++) {      results = this.state['user_number_' + i];    }    console.log(results);  }现在我不能console.log我的'results'对象

Answer 1

您可以draw_number从状态中提取属性并将其用作draws，然后Object.keys在状态中的其余属性上使用并将这些值用作numbers数组。

submitHandler = () => {

  let { draw_number: draws, ...rest } = this.state;

  let results = {

    numbers: Object.keys(rest).map(key => rest[key])

    draws,

  };

  console.log(results);

}