代码优化 if thisallChecked thismaterialAudioListforEachitem = itemchecked = true else thischeckedCounts = 0 thisallChecked = false thismaterial

可以使用数组的map方法来简化代码：

this.materialAudioList = this.materialAudioList.map(item => { item.checked = !this.allChecked; return item; }); this.checkedCounts = this.allChecked ? this.materialAudioList.length : 0; this.allChecked = !this.allChecked;