feat(StudyCoursePage): 添加goToStudyDetail方法并移除无用注释

在StudyCoursePage.vue中添加了goToStudyDetail方法，用于处理课程详情页面的跳转逻辑，并移除了无用的注释代码。同时，在main.js中添加了Array.prototype.at的polyfill，以支持旧版浏览器。

 /*
  * @Date: 2025-03-20 20:36:36
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-05-08 12:23:36
+ * @LastEditTime: 2025-05-16 16:42:32
  * @FilePath: /mlaj/src/main.js
  * @Description: 文件描述
  */
@@ -23,6 +23,15 @@ import { faCirclePause, faCirclePlay, faPlay, faPause, faBackwardStep, faForward
 /* add icons to the library */
 library.add(faCirclePause, faCirclePlay, faPlay, faPause, faBackwardStep, faForwardStep, faVolumeUp, faRedo, faRepeat, faList, faChevronDown, faVolumeOff, faXmark, faFileAlt, faTimes, faEye, faFilePdf, faExternalLinkAlt, faSpinner, faExclamationCircle, faDownload )
 
+if (!Array.prototype.at) {
+  Array.prototype.at = function(n) {
+    n = Math.trunc(n) || 0;
+    if (n < 0) n += this.length;
+    if (n < 0 || n >= this.length) return undefined;
+    return this[n];
+  };
+}
+
 const app = createApp(App)
 // 屏蔽警告信息
 app.config.warnHandler = () => null;

@@ -73,11 +73,11 @@
                 <div id="catalog" class="py-4">
                     <div v-if="course_lessons.length" class="space-y-4">
                         <div v-for="(lesson, index) in course_lessons" :key="index"
-                            @click="router.push(`/studyDetail/${lesson.id}`)"
+                            @click="goToStudyDetail(lesson.id)"
                             class="bg-white p-4 cursor-pointer hover:bg-gray-50 transition-colors border-b border-gray-200 relative">
-                            <div v-if="lesson.progress > 0 && lesson.progress < 100"
+                            <!-- <div v-if="lesson.progress > 0 && lesson.progress < 100"
                                 class="absolute top-2 right-2 px-2 py-1 bg-green-100 text-green-600 text-xs rounded">
-                                没有字段=>上次看到</div>
+                                没有字段=>上次看到</div> -->
                             <div class="text-black text-base font-medium mb-2">{{ lesson.title }}</div>
                             <div class="flex items-center text-sm text-gray-500">
                                 <span>{{ course_type_maps[lesson.course_type] }}</span>
@@ -317,6 +317,10 @@ const handleTabChange = (name) => {
 //         }
 //     ]
 // });
+
+const goToStudyDetail = (lessonId) => {
+    router.push(`/studyDetail/${lessonId}`);
+};
 </script>
 
 <style scoped>