一个定时控件，为什么无效？加一个按钮，按钮值是new Date().toLocaleTime

Question

Ba.jsx

import React from 'react';

const element = (

    <div>

        <h1>Hello, world!</h1>

        <h2>It is {new Date().toLocaleTimeString()}.</h2>

    </div>

);

function tick() {

    element

}

class Clock extends React.Component {

    setInterval(tick, 1000);

    render() {

        return (

            element

        );

    }

}

export default Clock;