JS数组的定义

<script type="text/javascript">

var a = [123,"中国人","武汉",789,"上海"]

var b = new Array("武汉","香港","澳门","杭州","昆明");

var c = new Array();
c[0] = 456;
c[1] = "长城";
c[2] = "龙王爷";
c[3] = "军事家";
c[4] = 888;

var d = new Array(9);   //这里的9表示有9个数组,无实际意义.

window.alert(a);

window.alert(b);

window.alert(c);

window.alert(d+"前面有内容吗");//没有定义值,所以只有逗号.
</script>