const app = getApp(); Component({ properties: { course_id: Number, id_: Number, course_identity:Number, refresh: { type: Number, observer: function (r) { if (r) { console.log("observer refresh") this.refresh(); this.setData({ refresh: false }); } } } }, data: { }, attached(){ let {course_id, course_identity} = this.data; let ext = {course_id, course_identity}; this.setData({ext}); this.refresh(); }, methods: { onChoose(e){ console.log(e); }, refresh(){ let {course_id} = this.data; app.api("weapps.courses.students")({course_id,limit:1000}).then(res=>{ console.log(res); let {students,students_count} = res; this.setData({students,students_count}); }) } } })