React.PropTypes.func的默认值是多少

Question

替换问号的正确价值是什么？为什么？

RecentProjectsSection.propTypes = {
  onClose: React.PropTypes.func.isRequired,
  projects: React.PropTypes.array.isRequired,
};

RecentProjectsSection.defaultProps = {
  onClose: ?????
  projects: [],
};

Answer 1

你需要一个功能,它的功能 - 取决于你.

RecentProjectsSection.defaultProps = {
  onClose: () => { 
    // your logic here...

    return;
  }
  projects: [],
};