nodejs实现发出蜂鸣声音(系统报警声)的方法

process.stdout.write('/x07')

var FANQIE_TIME = 25;function beep(){for(var i =0;i<20;i++){process.stdout.write('/x07')}}var startTime = new Date(); var needTime =startTime.setMinutes(startTime.getMinutes()+FANQIE_TIME);function showTime(){var now = new Date();var totalSecond = Math.floor( (needTime - now)/1000)if(totalSecond<=0){beep();if(interVal){clearInterval(interVal);}return;}var mm =Math.floor(totalSecond/60);var ss = Math.floor( totalSecond%60);console.log(mm+":"+ss);}var interVal = setInterval(showTime,1000);