对于我的音频播放器,如何用两位小数显示两次?
现在计数器显示... 0:7、0:8、0:9、0:10、0:11
但是应该像:
0:07、0:08、0:09、0:10、0:11
,音频文件的总时间显示为:273.298866
但是应该是:
4:13
var duration = document.getElementById('fullDuration');
var currentTime = document.getElementById('currentTime');
duration.innerHTML = mytrack.duration;
mytrack.addEventListener("loadedmetadata",function(){
var minutes = parseInt(mytrack.duration / 60);
var seconds = parseInt(mytrack.duration % 60);
duration.innerHTML = minutes + ':' + seconds;
})
和
function update(){
if(!mytrack.ended){
var playedMinutes = parseInt(mytrack.currentTime/60);
var playedSeconds = parseInt(mytrack.currentTime%60);
currentTime.innerHTML = playedMinutes + ':' + playedSeconds;
var size = parseInt(mytrack.currentTime*barSize/mytrack.duration);
progressBar.style.width = size + "px";
}
else{
currentTime.innerHTML = "0.00";
playButton.style.backgroundImage = 'url(file:///Users/Pier/Desktop/Play%20button.png)';
progressBar.style.width = "0px";
window.clearInterval(updateTime);
}
}
答案 0 :(得分:2)
String.padStart
是实现此目的的现代方法,但doesn't work with IE却是这样:
currentTime.textContent = playedMinutes + ':' + playedSeconds.toString().padStart(2, '0');