[我的回答]：<!DOCTYPE HTML><html ><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>数组</title><script type="text/javascript"> //创建数组 var arr = ['*','##',"***","&&","****","##*"]; arr[7] = "**"; //显示数组长度// alert(arr.length); //将数组内容输出，完成达到的效果。document.write(arr[0]+'<br/>');document.write(arr[7]+'<br/>');document.write(arr[2]+'<br/>');document.write(arr[4]+'<br/>');</script></head><body></body></html>
