- var hasAudio = !!a.canPlayType;
- var hasSandbox = "sandbox" in document.createElement("iframe");
- var hasMp3 = !!(a.canPlayType && a.canPlayType('audio/mpeg;').replace(/no/, ''));
- var clientTzOffset = new Date().getTimezoneOffset() * 60;
+ const hasAudio = !!a.canPlayType;
+ const hasSandbox = "sandbox" in document.createElement("iframe");
+ const hasMp3 = !!(a.canPlayType && a.canPlayType('audio/mpeg;').replace(/no/, ''));
+ const clientTzOffset = new Date().getTimezoneOffset() * 60;