JavaScript数组和Join()

一、数组

<script>//一维//空的数组  直接赋值var arr = []var arr = new Arry();arr[0] = "A"arr[1] = "B" //有长度的数组var arr = new Arry(10);//直接创建并赋值var arr = new Arry('1','A','B',4,10);var arr = ['1','A','B',4,10]//二维方法一：var arr = new Arry();arr[0] = new Arry();arr[0][0] = "A"arr[0][1] = "a"arr[1] = new Arry();arr[1][0] = "B"arr[1][1] = "b"方法二：var arr = new Arry(['A','a'],['B','b']);</script>

二、Join()

<script>var arr = [];arr[0] = "A"arr[1] = "B"arr[2] = "C"document.write(arr.json());document.write("<br/>");document.write(arr.json(":"));</script>

三、

重置formdocument.form1.reset();