javascript遍历数组的两种步骤

javascript遍历数组的两种方法

javascript遍历数组的两种方法var aa=new Array(1,2,3,4);var len=aa.length;for (var i=0;i<=len-1;i++) { document.write(aa[i]+","); } for (var i in aa) { document.write(aa[i]+",");}