13.2.1 length属性.html

即学即用JavaScript核心对象参考手册原版光盘

<script>
    var arr=new Array(1,2,3,4,5,6,7,8);
	with (document)
	{
	    write("数组长度:"+arr.length);
		write("<br>新增一个元素")
		arr[arr.length]=arr.length+1;
	    write("<br>数组长度:"+arr.length);
		write("<br>奇数位元素：");
		for(var i=0;i<arr.length;i+=2)
		{
		   write(arr[i]+",");
		}
		write("<br>偶数位元素：");
		for(var i=1;i<arr.length;i+=2)
		{
		   write(arr[i]+",");
		}
	}
</script>