ahook-状态切换hooks-useToggle

告别useState去设置状态

原来写法

javascript 复制代码

import React from 'react';
import { useState } from 'ahooks';

export default () => {
  const [state, setState] = useState (false);

  return (
    <div>
      <p>Effects：{`${state}`}</p>
        <button type="button" onClick={()=> setState(!state)}>
          State
        </button>
    </div>
  );
};

useToggle

用于在两个状态值间切换的 Hook。

代码演示

javascript 复制代码

import React from 'react';
import { useToggle } from 'ahooks';

export default () => {
  const [state, { toggle, setLeft, setRight }] = useToggle();

  return (
    <div>
      <p>Effects：{`${state}`}</p>
      <p>
        <button type="button" onClick={toggle}>
          Toggle
        </button>
        <button type="button" onClick={setLeft} style={{ margin: '0 8px' }}>
          Toggle False
        </button>
        <button type="button" onClick={setRight}>
          Toggle True
        </button>
      </p>
    </div>
  );
};

其中：
state：表示状态值
toggle, setLeft, setRight：分别表示切换状态值的方法

useToggle：hooks，也会有默认值或者两个值进行切换

javascript 复制代码

import React from 'react';
import { useToggle } from 'ahooks';

export default () => {
  const [state, { toggle, set, setLeft, setRight }] = useToggle('Hello', 'World');

  return (
    <div>
      <p>Effects：{state}</p>
      <p>
        <button type="button" onClick={toggle}>
          Toggle
        </button>
        <button type="button" onClick={() => set('Hello')} style={{ margin: '0 8px' }}>
          Set Hello
        </button>
        <button type="button" onClick={() => set('World')}>
          Set World
        </button>
        <button type="button" onClick={setLeft} style={{ margin: '0 8px' }}>
          Set Left
        </button>
        <button type="button" onClick={setRight}>
          Set Right
        </button>
      </p>
    </div>
  );
};