ant-design-vue/antdv-demo/docs/message/demo/update.md

#### 更新消息内容 可以通过唯一的 `key` 来更新内容。 #### Update Message Content Update message content with unique `key`.

<template>
  <a-button type="primary" @click="openMessage">
    Open the message box
  </a-button>
</template>
<script>
const key = 'updatable';
export default {
  methods: {
    openMessage() {
      this.$message.loading({ content: 'Loading...', key });
      setTimeout(() => {
        this.$message.success({ content: 'Loaded!', key, duration: 2 });
      }, 1000);
    },
  },
};
</script>