javascript一段时间代码
<SCRIPT language=javaScript>
<!--
now = new Date(),hour = now.getHours()
if(hour < 6){document.write("凌晨好!")}
else if (hour < 9){document.write("早上好！")}
else if (hour < 12){document.write("上午好！")}
else if (hour < 14){document.write("中午好！")}
else if (hour < 17){document.write("下午好！")}
else if (hour < 19){document.write("傍晚好！")}
else if (hour < 22){document.write("晚上好！")}
else {document.write("夜里好!")}
// -->
</SCRIPT>
今天是
<SCRIPT language=JavaScript><!--
var dayNames = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
Stamp = new Date();
document.write("" + Stamp.getYear() + "年"+(Stamp.getMonth() + 1) +"月"+Stamp.getDate()+ "日"+ "");
//--></SCRIPT>
相关文档：
reg = /^((((((0[48])|([13579][26])|([2468][048]))00)|([0-9][0-9]((0[48])|([13579][26])|([2468][048]))))-02-29)|(((000[1-9])|(00[1-9][0-9])|(0[1-9][0-9][0-9])|([1-9][0-9][0-9][0-9]))-((((0[13578])|(1[02]))-31)|(((0[1,3-9])|(1[0-2]))-(29|30))|(((0[1-9])|(1[0-2]))-((0[1-9])|(1[0-9])|(2[0-8]))))))$/i; ......
最近在CSDN上有人问，怎么用JS循环26个英文字母，想都没想，写下以下代码
<script type="text/javascript">
<!--
var character = new Array("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","X","Y","Z");
for(var i=0;i<25;i++)
{
alert(character[i]);
}
......
1.document.write( " "); 输出语句
2.JS中的注释为//
3.传统的HTML文档顺序是:document- >html- >(head,body)
4.一个浏览器窗口中的DOM顺序是:window- >(navigator,screen,history,location,document)
5.得到表单中元素的名称和值:document.getElementById( "表单中元素的ID號 ").name(或value)
6.一个 ......
在JavaScript中可以创建三种消息框：警告框、确认框、提示框
警告框经常用于确保用户可以得到某些信息。当警告框出现后，用户需要点击确定按钮才能继续进行操作。
语法：
alert("文本")
确认框用于使用户可以验证或者接受某些信息。当确认框出现后，用户需要点击确定或者取消按钮才能继续进行操作。如果用户点击确认，� ......
