合并style

src/chat.js

@@ -1,7 +1,6 @@
 import { get, set, del, update, createStore, values } from 'idb-keyval'
 import { Span, Button, List, ListItem, Input, createElement } from './weigets.js'
 
-// 先不划分频道, 只有一个公共聊天室
 export default class Chat {
     constructor({ name, EventListeners = {}, onsend, onexit }) {
         this.event = { onsend, onexit }
@@ -48,9 +47,8 @@ export default class Chat {
                 }),
             ]
         }))
-        // 写入 css 样式到 head
-        const style = document.createElement('style')
-        style.innerText = `
+        document.head.appendChild(createElement({
+            innerText: `
             ul.chat-list {
                 max-height: 70vh;
                 overflow-y: auto;
@@ -68,9 +66,8 @@ export default class Chat {
             }
             ul.chat-list > li.disable {
                 color: #888;
-            }
-        `
-        document.head.appendChild(style)
+            }`
+        }, 'style'))
         this.载入消息()
     }
     // 收到应答(对方确认消息已被接收)