perf(base-S-T3): colliery 首页 1s 时钟句柄独立为 clockTimer 并在卸载时清理

src/views/vent/home/colliery/index.vue

@@ -117,6 +117,7 @@
   const baseUrl = VUE_APP_URL.baseUrl;
   const actions = getActions();
   let timer: NodeJS.Timeout | null = null;
+  let clockTimer: NodeJS.Timeout | null = null; // [perf-base-v1] 1s 时钟句柄，与数据轮询 timer 分离
   let fanLocalList = reactive<any[]>([]); //局部风机数据
   let mainList = ref<any[]>([]); //主通风机数据
   let centerList = reactive<any[]>([]); //中间区域数据
@@ -242,7 +243,9 @@
 
   //获取当前时间年月日时分秒
   function getNowTime() {
-    setInterval(() => {
+    // [perf-base-v1] 句柄赋值给 clockTimer，修复裸 setInterval 无法清理的泄漏
+    clockTimer = Number(
+      setInterval(() => {
       nowTimeYear.value = dayjs().format('YYYY/MM/DD');
       let week = dayjs(new Date().getTime()).day();
       switch (week) {
@@ -279,7 +282,8 @@
         seconds = `0${seconds}`;
       }
       nowTime.value = `${hours}:${minutes}:${seconds}`;
-    }, 1000);
+      }, 1000)
+    );
   }
 
   function goModalDetail() {
@@ -322,6 +326,8 @@
   onBeforeUnmount(() => {
     clearInterval(timer);
     timer = null;
+    clearInterval(clockTimer); // [perf-base-v1] 清理 1s 时钟
+    clockTimer = null;
   });
   onUnmounted(() => {
     pageType.value = '';