补充controller，修改变量，主页bug修改

liangxiaozhen

2023-08-11 af908216bb0012fe849e3b49b3039c7ba238f8f0

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<template>
    <div>
        <h1>LWC</h1>
        <lightning-button
            label="Press me and send an event up!"
            onclick={handleClick}
        ></lightning-button>
        <p class="label">{label}</p>
        <p class="message">{message}</p>
    </div>
</template>