class Page extends Component{
 render() {
 let hasCreatePermission = tool.getAuth("createUser"); 
 return (
  <div>
  {hasCreatePermission ? <Button>创建用户</Button> : null}
  </div>
 );
 }
}

 render() {
 let hasCreatePermission = tool.getAuth("createUser"); 
 return (
  <div>
  {hasCreatePermission ? <Button>创建用户</Button> : <Button disabled={true}>创建用户</Button>}
  </div>
 );
 }

 render() {
 let hasCreatePermission = tool.getAuth("createUser"); 
 return (
  <div>
  {hasCreatePermission ? <Button>创建用户</Button> : <Button onClick={()=>alert("权限不足，请找管理员小K申请")}>创建用户</Button>}
  </div>
 );
 }

export let wrapAuth = ComposedComponent =>class WrapComponent extends Component {
 // 构造
 constructor(props) {
  super(props);
 }

 static propTypes = {
  auth:PropTypes.string.isRequired,
 };

 render() {
  if (tool.getAuth(this.props.auth)) {
  return <ComposedComponent { ...this.props} />;
  } else {
  return null;
  }
 }
};

const AuthButton = wrapAuth(Button);
class Page extends Component{
 render() {
 return (
  <div>
  <AuthButton auth="createUser">创建用户</AuthButton>
  </div>
 );
 }
}

return <ComposedComponent disabled={true} { ...this.props} />

return <ComposedComponent onClick={()=>alert("权限不足，请找管理员小K申请")} { ...this.props} />