使用火狐浏览器F12，点击存储，点击本地缓存，查看当前浏览器内下面的本地缓存KEY与VALUE
点击控制台进行设置 读取 删除 等操作。
设置：
localStorage.setItem("xgplayer_pc_localSettings-all","{"definition":"360p","definitionSetDate":"2021/3/26"}")
读取
localStorage.getItem('xgplayer_pc_localSettings-all')
删除
localStorage.removeItem('xgplayer_pc_localSettings-all')