JavaScript用Delay関数。BoneScriptとあわせてどうぞ。

delay.js

function delay(delay_ms){
    var nowtime = Date.now();
    var timeout = nowtime + delay_ms;
    while(nowtime < timeout){
        nowtime = Date.now();
    }
}

// us待ちメソッド…ただし正確性は無い
function delayMicroseconds(delay_us){
    var date = new Date();
    var nowtime = date.getMilliseconds();
    var timeout = nowtime + delay_us;
    
    if(timeout > 999){
      timeout -= 999;
      while(nowtime > timeout){
        var date = new Date();
        nowtime = date.getMilliseconds();
      }
    }
    else{
      while(nowtime < timeout){
        var date = new Date();
        nowtime = date.getMilliseconds();
      }
    }
}