复选框默认值已选中，并且在React.js中也无法使用

Question

您好，我试图使开关按钮（复选框）处于默认选中状态，并且在反应中也被禁用。但是以某种方式，如果我仅将checked = {true}放进去，它将被检查，但是当我添加disabled =“ disabled”时，开关按钮将被取消选中和禁用（即使有选中属性）。有人可以建议吗？谢谢

 <label htmlFor="disabled-on" className="switch__label">
            <input
                type="checkbox"
                name="disabled-on"
                id="disabled-on"
                checked={true}
                disabled="disabled"  /* if added disabled it's not working with checked" */
                className="switch__input switch__input--disabled-on"
            />

Answer 1

[您的其他地方的代码可能有问题，请检查此代码-看起来一切正常。

class TodoApp extends React.Component {
  constructor(props) {
    super(props)
  }
  
  render() {
    return (
      <div>
        <ul>
          <li>
          <label htmlFor="disabled-on" className="switch__label">
             custom checkbox 1
              <input
                  type="checkbox"
                  name="disabled-on"
                  id="disabled-on"
                  checked={true}
                  disabled="disabled"
                  className="switch__input switch__input--disabled-on"
              />
          </label>
          </li><li>
          <label htmlFor="disabled-on" className="switch__label">
             custom checkbox 2
              <input
                  type="checkbox"
                  name="disabled-off"
                  id="disabled-off"
                  checked={true}
                  className="switch__input switch__input--disabled-on"
              />
          </label>
          </li>
        </ul>
      </div>
    )
  }
}

ReactDOM.render(<TodoApp />, document.querySelector("#app"))

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<div id="app"></div>