js 字符串转单个字符数组

number=12345

将var a=${number};转成数组aa[0]=1;aa[1]=2;aa[2]=3;aa[3]=4;aa[4]=5;并且迭代数组

var s = "12345";
var ss = s.split("");
ss.forEach(function (s) { alert(s); });

var s = "12345";
var arr = Array.from(s);

var aa = [];
for(var i = 0;i<a.length;i++){
aa[i] = a.charAt[i];
}