var?music=["m1","m2","m3","m4","m5","m6","m7","m8","m9","m10"];
var?i=0;
function?next(){
i=i+1;
if(i=music.length){
i=0;
}
console.log(music.length);
console.log(i);
console.log(music[i]);
var?mp3=document.getElementById(music[i]);
mp3.play();
isplay=true;
document.getElementById("center").className="pause";
}為何next()里面的i自增1不起作用，i的值還是0？？？
js中function next()函數內的參數運算后值無法改變
冰山點水
2016-07-30 14:13:29
