<script language="javascript">
<!--
var myArray = ['1', '3', '78', '1767'];
document.write("myArray before delete = " + myArray);//顯示刪除前數組的值
document.write("<br />");
delete myArray[2];  // 刪除數組的第三個元素
document.write("myArray after delete = " + myArray); //顯示刪除后數組的值
//-->
</script>